Fix Profile viewer issues with Turkish language (#1116)

40 files changed, 152 insertions, 119 deletions

diff --git a/src/main/java/io/github/moulberry/notenoughupdates/NEUManager.java b/src/main/java/io/github/moulberry/notenoughupdates/NEUManager.java
index cf95b081..e41ea9df 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/NEUManager.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/NEUManager.java
@@ -495,8 +495,8 @@ public class NEUManager {
 		int lastStringMatch = -1;
 		ArrayList<DebugMatch> debugMatches = new ArrayList<>();
 
-		toSearch = cleanForTitleMapSearch(toSearch).toLowerCase();
-		query = cleanForTitleMapSearch(query).toLowerCase();
+		toSearch = cleanForTitleMapSearch(toSearch).toLowerCase(Locale.ROOT);
+		query = cleanForTitleMapSearch(query).toLowerCase(Locale.ROOT);
 		String[] splitToSearch = toSearch.split(" ");
 		String[] queryArray = query.split(" ");
 
@@ -683,7 +683,7 @@ public class NEUManager {
 			results.addAll(new TreeSet<>(search(query, loreWordMap)));
 		} else if (query.startsWith("id:")) {
 			query = query.substring(3);
-			results.addAll(new TreeSet<>(subMapWithKeysThatAreSuffixes(query.toUpperCase(), itemMap).keySet()));
+			results.addAll(new TreeSet<>(subMapWithKeysThatAreSuffixes(query.toUpperCase(Locale.ROOT), itemMap).keySet()));
 		} else {
 			if (!query.trim().contains(" ")) {
 				StringBuilder sb = new StringBuilder();
@@ -716,7 +716,7 @@ public class NEUManager {
 	public Set<String> search(String query, TreeMap<String, HashMap<String, List<Integer>>> wordMap) {
 		HashMap<String, List<Integer>> matches = null;
 
-		query = cleanForTitleMapSearch(query).toLowerCase();
+		query = cleanForTitleMapSearch(query).toLowerCase(Locale.ROOT);
 		for (String queryWord : query.split(" ")) {
 			HashMap<String, List<Integer>> matchesToKeep = new HashMap<>();
 			for (HashMap<String, List<Integer>> wordMatches : subMapWithKeysThatAreSuffixes(queryWord, wordMap).values()) {
@@ -871,7 +871,7 @@ public class NEUManager {
 	}
 
 	public static String cleanForTitleMapSearch(String str) {
-		return str.replaceAll("(\u00a7.)|[^#0-9a-zA-Z ]", "").toLowerCase().trim();
+		return str.replaceAll("(\u00a7.)|[^#0-9a-zA-Z ]", "").toLowerCase(Locale.ROOT).trim();
 	}
 
 	public void showRecipe(JsonObject item) {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/NEUOverlay.java b/src/main/java/io/github/moulberry/notenoughupdates/NEUOverlay.java
index 797260c4..c3be39b2 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/NEUOverlay.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/NEUOverlay.java
@@ -97,6 +97,7 @@ import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import java.util.TreeSet;
@@ -568,14 +569,14 @@ public class NEUOverlay extends Gui {
 				} else if (manager.getItemInformation().containsKey(display)) {
 					render = manager.jsonToStack(manager.getItemInformation().get(display), true, true);
 				} else {
-					Item item = Item.itemRegistry.getObject(new ResourceLocation(display.toLowerCase()));
+					Item item = Item.itemRegistry.getObject(new ResourceLocation(display.toLowerCase(Locale.ROOT)));
 					if (item != null) {
 						render = new ItemStack(item);
 					}
 				}
 				if (render != null) {
 					NBTTagCompound tag = render.getTagCompound() != null ? render.getTagCompound() : new NBTTagCompound();
-					tag.setString("qc_id", quickCommandStrSplit[0].toLowerCase().trim());
+					tag.setString("qc_id", quickCommandStrSplit[0].toLowerCase(Locale.ROOT).trim());
 					render.setTagCompound(tag);
 
 					Minecraft.getMinecraft().getTextureManager().bindTexture(GuiTextures.quickcommand_background);
@@ -1485,7 +1486,7 @@ public class NEUOverlay extends Gui {
 					if (item != null) searchedItems.add(item);
 				}
 			}
-			switch (textField.getText().toLowerCase().trim()) {
+			switch (textField.getText().toLowerCase(Locale.ROOT).trim()) {
 				case "nullzee":
 					searchedItems.add(CustomItems.NULLZEE);
 					break;
@@ -1918,14 +1919,14 @@ public class NEUOverlay extends Gui {
 			updateSearch();
 		}
 
-		if (textField.getText().toLowerCase().contains("bald")) {
+		if (textField.getText().toLowerCase(Locale.ROOT).contains("bald")) {
 			Minecraft.getMinecraft().getTextureManager().bindTexture(SUPERGEHEIMNISVERMOGEN);
 			GlStateManager.color(1, 1, 1, 1);
 			Utils.drawTexturedRect((width - 64) / 2f, (height - 64) / 2f - 114, 64, 64, GL11.GL_LINEAR);
 			GlStateManager.bindTexture(0);
 		}
 
-		if (textField.getText().toLowerCase().contains("lunar")) {
+		if (textField.getText().toLowerCase(Locale.ROOT).contains("lunar")) {
 			Minecraft.getMinecraft().getTextureManager().bindTexture(ATMOULBERRYWHYISMYLUNARCLIENTBUGGING);
 			GlStateManager.color(1, 1, 1, 1);
 			GlStateManager.translate(0, 0, 100);
@@ -1933,7 +1934,7 @@ public class NEUOverlay extends Gui {
 			GlStateManager.bindTexture(0);
 		}
 
-		SunTzu.setEnabled(textField.getText().toLowerCase().startsWith("potato"));
+		SunTzu.setEnabled(textField.getText().toLowerCase(Locale.ROOT).startsWith("potato"));
 
 		updateGuiGroupSize();
 
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/NotEnoughUpdates.java b/src/main/java/io/github/moulberry/notenoughupdates/NotEnoughUpdates.java
index 38270c77..848185a8 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/NotEnoughUpdates.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/NotEnoughUpdates.java
@@ -87,6 +87,7 @@ import org.apache.logging.log4j.Logger;
 import java.awt.*;
 import java.io.File;
 import java.util.HashMap;
+import java.util.Locale;
 import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -470,7 +471,7 @@ public class NotEnoughUpdates {
 
 		if (mc != null && mc.theWorld != null && mc.thePlayer != null) {
 			if (mc.isSingleplayer() || mc.thePlayer.getClientBrand() == null ||
-				!mc.thePlayer.getClientBrand().toLowerCase().contains("hypixel")) {
+				!mc.thePlayer.getClientBrand().toLowerCase(Locale.ROOT).contains("hypixel")) {
 				hasSkyblockScoreboard = false;
 				return;
 			}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/core/GuiElementColour.java b/src/main/java/io/github/moulberry/notenoughupdates/core/GuiElementColour.java
index 405b18fc..c02e3e15 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/core/GuiElementColour.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/core/GuiElementColour.java
@@ -34,6 +34,7 @@ import org.lwjgl.opengl.GL11;
 
 import java.awt.*;
 import java.awt.image.BufferedImage;
+import java.util.Locale;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
 
@@ -274,7 +275,7 @@ public class GuiElementColour extends GuiElement {
 		}
 
 		hexField.setSize(48, 10);
-		if (!hexField.getFocus()) hexField.setText(Integer.toHexString(c.getRGB() & 0xFFFFFF).toUpperCase());
+		if (!hexField.getFocus()) hexField.setText(Integer.toHexString(c.getRGB() & 0xFFFFFF).toUpperCase(Locale.ROOT));
 
 		StringBuilder sb = new StringBuilder(EnumChatFormatting.GRAY + "#");
 		for (int i = 0; i < 6 - hexField.getText().length(); i++) {
@@ -421,7 +422,7 @@ public class GuiElementColour extends GuiElement {
 				hexField.setText(old);
 			} else {
 				try {
-					String text = hexField.getText().toLowerCase();
+					String text = hexField.getText().toLowerCase(Locale.ROOT);
 
 					int rgb = Integer.parseInt(text, 16);
 					int alpha = (ChromaColour.specialToSimpleRGB(colour.get()) >> 24) & 0xFF;
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/core/util/StringUtils.java b/src/main/java/io/github/moulberry/notenoughupdates/core/util/StringUtils.java
index 20031ec3..ae8011c5 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/core/util/StringUtils.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/core/util/StringUtils.java
@@ -95,7 +95,7 @@ public class StringUtils {
 
 	public static String firstUpperLetter(String text) {
 		if (text.isEmpty()) return text;
-		String firstLetter = ("" + text.charAt(0)).toUpperCase();
+		String firstLetter = ("" + text.charAt(0)).toUpperCase(Locale.ROOT);
 		return firstLetter + text.substring(1);
 	}
 
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/dungeons/DungeonWin.java b/src/main/java/io/github/moulberry/notenoughupdates/dungeons/DungeonWin.java
index 2cf09457..0aa44cd5 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/dungeons/DungeonWin.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/dungeons/DungeonWin.java
@@ -37,6 +37,7 @@ import java.util.ArrayList;
 import java.util.ConcurrentModificationException;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Random;
 import java.util.Set;
 import java.util.concurrent.Executors;
@@ -191,7 +192,7 @@ public class DungeonWin {
 				if (matcher.find()) {
 					lastDungeonFinish = currentTime;
 					String score = matcher.group(1);
-					switch (score.toUpperCase()) {
+					switch (score.toUpperCase(Locale.ROOT)) {
 						case "S+":
 							TEAM_SCORE = SPLUS;
 							break;
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/infopanes/HTMLInfoPane.java b/src/main/java/io/github/moulberry/notenoughupdates/infopanes/HTMLInfoPane.java
index de9c608f..770e313a 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/infopanes/HTMLInfoPane.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/infopanes/HTMLInfoPane.java
@@ -60,6 +60,7 @@ import java.net.URLConnection;
 import java.nio.charset.CharsetEncoder;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
+import java.util.Locale;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -128,7 +129,7 @@ public class HTMLInfoPane extends TextInfoPane {
 
 			public void parseInternalImageLink(String imageNamespace, String rawImageLink) {
 				rawImageLink = rawImageLink.replaceFirst("\\|x([0-9]+)px", "\\|$1x$1px");
-				if (!rawImageLink.split("\\|")[0].toLowerCase().endsWith(".jpg")) {
+				if (!rawImageLink.split("\\|")[0].toLowerCase(Locale.ROOT).endsWith(".jpg")) {
 					super.parseInternalImageLink(imageNamespace, rawImageLink);
 				}
 			}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/listener/ItemTooltipEssenceShopListener.java b/src/main/java/io/github/moulberry/notenoughupdates/listener/ItemTooltipEssenceShopListener.java
index 4b380c2f..86650991 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/listener/ItemTooltipEssenceShopListener.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/listener/ItemTooltipEssenceShopListener.java
@@ -28,6 +28,7 @@ import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Locale;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -59,7 +60,7 @@ public class ItemTooltipEssenceShopListener {
 					int amount = Integer.parseInt(rawNumber);
 					String type = matcher.group(2);
 
-					String essenceName = "ESSENCE_" + type.toUpperCase();
+					String essenceName = "ESSENCE_" + type.toUpperCase(Locale.ROOT);
 					JsonObject bazaarInfo = neu.manager.auctionManager.getBazaarInfo(essenceName);
 
 					if (bazaarInfo != null && bazaarInfo.has("curr_sell")) {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/listener/RenderListener.java b/src/main/java/io/github/moulberry/notenoughupdates/listener/RenderListener.java
index bd923157..dcbc8654 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/listener/RenderListener.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/listener/RenderListener.java
@@ -656,7 +656,7 @@ public class RenderListener {
 						String displayName = item.getDisplayName();
 						Matcher matcher = ESSENCE_PATTERN.matcher(displayName);
 						if (neu.config.dungeons.useEssenceCostFromBazaar && matcher.matches()) {
-							String type = matcher.group(1).toUpperCase();
+							String type = matcher.group(1).toUpperCase(Locale.ROOT);
 							JsonObject bazaarInfo = neu.manager.auctionManager.getBazaarInfo("ESSENCE_" + type);
 							if (bazaarInfo != null && bazaarInfo.has("curr_sell")) {
 								float bazaarPrice = bazaarInfo.get("curr_sell").getAsFloat();
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/mbgui/MBAnchorPoint.java b/src/main/java/io/github/moulberry/notenoughupdates/mbgui/MBAnchorPoint.java
index 7193b47f..d0aac435 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/mbgui/MBAnchorPoint.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/mbgui/MBAnchorPoint.java
@@ -22,6 +22,7 @@ package io.github.moulberry.notenoughupdates.mbgui;
 import org.lwjgl.util.vector.Vector2f;
 
 import java.io.Serializable;
+import java.util.Locale;
 
 public class MBAnchorPoint implements Serializable {
 	public enum AnchorPoint {
@@ -59,7 +60,7 @@ public class MBAnchorPoint implements Serializable {
 
 		try {
 			String[] split = str.split(":");
-			AnchorPoint point = AnchorPoint.valueOf(split[0].toUpperCase());
+			AnchorPoint point = AnchorPoint.valueOf(split[0].toUpperCase(Locale.ROOT));
 			Vector2f pos = new Vector2f(Float.parseFloat(split[1]), Float.parseFloat(split[2]));
 			return new MBAnchorPoint(point, pos, Boolean.parseBoolean(split[3]));
 		} catch (Exception e) {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/AntiCoopAdd.java b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/AntiCoopAdd.java
index 40425560..78c7dd2e 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/AntiCoopAdd.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/AntiCoopAdd.java
@@ -33,6 +33,8 @@ import net.minecraft.util.ChatComponentText;
 import net.minecraft.util.EnumChatFormatting;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
+import java.util.Locale;
+
 @NEUAutoSubscribe
 public class AntiCoopAdd {
 
@@ -72,7 +74,7 @@ public class AntiCoopAdd {
 	public Boolean onPacketChatMessage(C01PacketChatMessage packet) {
 		if (!NotEnoughUpdates.INSTANCE.config.misc.coopWarning) return false;
 
-		String message = packet.getMessage().toLowerCase();
+		String message = packet.getMessage().toLowerCase(Locale.ROOT);
 		if (message.startsWith("/hypixelcommand:coopadd")) {
 			Utils.addChatMessage("§e[NEU] You just entered a malicious looking Co-op add command! If you truly want to add someone to your coop, type §e/coopadd <name>");
 			return true;
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/BetterContainers.java b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/BetterContainers.java
index e7331378..6759d940 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/BetterContainers.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/BetterContainers.java
@@ -47,6 +47,7 @@ import java.io.BufferedReader;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
+import java.util.Locale;
 
 @NEUAutoSubscribe
 public class BetterContainers {
@@ -132,7 +133,7 @@ public class BetterContainers {
 		GuiChest eventGui = (GuiChest) Minecraft.getMinecraft().currentScreen;
 		ContainerChest cc = (ContainerChest) eventGui.inventorySlots;
 		String containerName = cc.getLowerChestInventory().getDisplayName().getUnformattedText();
-		return containerName.toLowerCase().trim().startsWith("navigate the maze");
+		return containerName.toLowerCase(Locale.ROOT).trim().startsWith("navigate the maze");
 	}
 
 	public static boolean isOverriding() {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalMetalDetectorSolver.java b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalMetalDetectorSolver.java
index 76f56fac..e355c437 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalMetalDetectorSolver.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalMetalDetectorSolver.java
@@ -38,6 +38,7 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.stream.Collectors;
 
 public class CrystalMetalDetectorSolver {
@@ -378,7 +379,7 @@ public class CrystalMetalDetectorSolver {
 		NEUDebugLogger.log(NEUDebugFlag.METAL, "Locating center using Keeper: " +
 			EnumChatFormatting.WHITE + keeperEntity);
 		String keeperType = keeperName.substring(keeperName.indexOf(KEEPER_OF_STRING) + KEEPER_OF_STRING.length());
-		minesCenter = keeperEntity.getPosition().add(keeperOffsets.get(keeperType.toLowerCase()));
+		minesCenter = keeperEntity.getPosition().add(keeperOffsets.get(keeperType.toLowerCase(Locale.ROOT)));
 		NEUDebugLogger.log(NEUDebugFlag.METAL, "Mines center: " +
 			EnumChatFormatting.WHITE + minesCenter.toString());
 		Utils.addChatMessage(
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/DwarvenMinesWaypoints.java b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/DwarvenMinesWaypoints.java
index f05f1cd8..4d1494ed 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/DwarvenMinesWaypoints.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/DwarvenMinesWaypoints.java
@@ -43,6 +43,7 @@ import org.lwjgl.util.vector.Vector3f;
 
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.Locale;
 import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -226,17 +227,17 @@ public class DwarvenMinesWaypoints {
 				}
 			}
 		}
-		String skyblockLocation = SBInfo.getInstance().location.toLowerCase();
+		String skyblockLocation = SBInfo.getInstance().location.toLowerCase(Locale.ROOT);
 		if (locWaypoint >= 1) {
 			for (Map.Entry<String, Vector3f> entry : waypointsMap.entrySet()) {
 				if (locWaypoint >= 2) {
 					RenderUtils.renderWayPoint(EnumChatFormatting.AQUA + entry.getKey(), entry.getValue(), event.partialTicks);
 				} else {
-					String commissionLocation = entry.getKey().toLowerCase();
+					String commissionLocation = entry.getKey().toLowerCase(Locale.ROOT);
 					for (String commissionName : MiningOverlay.commissionProgress.keySet()) {
 						if (NotEnoughUpdates.INSTANCE.config.mining.hideWaypointIfAtLocation)
 							if (commissionLocation.replace("'", "").equals(skyblockLocation)) continue;
-						if (commissionName.toLowerCase().contains(commissionLocation)) {
+						if (commissionName.toLowerCase(Locale.ROOT).contains(commissionLocation)) {
 							if (commissionName.contains("Titanium")) {
 								RenderUtils.renderWayPoint(
 									EnumChatFormatting.WHITE + entry.getKey(),
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/EnchantingSolvers.java b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/EnchantingSolvers.java
index a5c96e4a..588628c6 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/EnchantingSolvers.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/EnchantingSolvers.java
@@ -44,6 +44,7 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 
 @NEUAutoSubscribe
@@ -498,7 +499,7 @@ public class EnchantingSolvers {
 							if (display.hasKey("Lore", 9)) {
 								NBTTagList list = display.getTagList("Lore", 8);
 								for (int i = 0; i < list.tagCount(); i++) {
-									if (list.getStringTagAt(i).toLowerCase().contains("powerup")) {
+									if (list.getStringTagAt(i).toLowerCase(Locale.ROOT).contains("powerup")) {
 										powerupMatches.add(index);
 										continue out;
 									}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/PetInfoOverlay.java b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/PetInfoOverlay.java
index fb12906a..c823cf88 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/PetInfoOverlay.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/PetInfoOverlay.java
@@ -63,6 +63,7 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
@@ -308,7 +309,7 @@ public class PetInfoOverlay extends TextOverlay {
 		pet.petType = petType;
 		JsonObject petTypes = Constants.PETS.get("pet_types").getAsJsonObject();
 		pet.petXpType =
-			petTypes.has(pet.petType) ? petTypes.get(pet.petType.toUpperCase()).getAsString().toLowerCase() : "unknown";
+			petTypes.has(pet.petType) ? petTypes.get(pet.petType.toUpperCase(Locale.ROOT)).getAsString().toLowerCase(Locale.ROOT) : "unknown";
 		pet.skin = skin;
 
 		return pet;
@@ -328,7 +329,7 @@ public class PetInfoOverlay extends TextOverlay {
 				"alchemy",
 				"all"
 			);
-		if (!validXpTypes.contains(xpType.toLowerCase())) return 0;
+		if (!validXpTypes.contains(xpType.toLowerCase(Locale.ROOT))) return 0;
 
 		float tamingPercent = 1.0f + (config.tamingLevel / 100f);
 		xp = xp * tamingPercent;
@@ -354,10 +355,10 @@ public class PetInfoOverlay extends TextOverlay {
 		}
 		JsonObject pets = Constants.PETS;
 		if (pets != null && pets.has("custom_pet_leveling") &&
-			pets.get("custom_pet_leveling").getAsJsonObject().has(pet.petType.toUpperCase()) &&
-			pets.get("custom_pet_leveling").getAsJsonObject().get(pet.petType.toUpperCase()).getAsJsonObject().has(
+			pets.get("custom_pet_leveling").getAsJsonObject().has(pet.petType.toUpperCase(Locale.ROOT)) &&
+			pets.get("custom_pet_leveling").getAsJsonObject().get(pet.petType.toUpperCase(Locale.ROOT)).getAsJsonObject().has(
 				"xp_multiplier")) {
-			xp *= pets.get("custom_pet_leveling").getAsJsonObject().get(pet.petType.toUpperCase()).getAsJsonObject().get(
+			xp *= pets.get("custom_pet_leveling").getAsJsonObject().get(pet.petType.toUpperCase(Locale.ROOT)).getAsJsonObject().get(
 				"xp_multiplier").getAsFloat();
 		}
 		return xp;
@@ -660,7 +661,7 @@ public class PetInfoOverlay extends TextOverlay {
 
 	public static float getBoostMultiplier(String boostName) {
 		if (boostName == null) return 1;
-		boostName = boostName.toLowerCase();
+		boostName = boostName.toLowerCase(Locale.ROOT);
 		if (boostName.equalsIgnoreCase("PET_ITEM_ALL_SKILLS_BOOST_COMMON")) {
 			return 1.1f;
 		} else if (boostName.equalsIgnoreCase("ALL_SKILLS_SUPER_BOOST")) {
@@ -859,7 +860,7 @@ public class PetInfoOverlay extends TextOverlay {
 								String rarityString = Utils.getRarityFromInt(rarity);
 
 								String name = StringUtils.cleanColour(petStack.getDisplayName());
-								name = name.substring(name.indexOf(']') + 1).trim().replace(' ', '_').toUpperCase();
+								name = name.substring(name.indexOf(']') + 1).trim().replace(' ', '_').toUpperCase(Locale.ROOT);
 
 								float petXp = petInfoObject.get("exp").getAsFloat();
 
@@ -998,7 +999,7 @@ public class PetInfoOverlay extends TextOverlay {
 
 					String pet = Utils.cleanColour(petName)
 														.replaceAll("[^\\w ]", "").trim()
-														.replace(" ", "_").toUpperCase();
+														.replace(" ", "_").toUpperCase(Locale.ROOT);
 
 					setCurrentPet(getClosestPetIndex(pet, rarity.petId, "", lastLevelHovered));
 					if (PetInfoOverlay.config.selectedPet == -1) {
@@ -1010,9 +1011,9 @@ public class PetInfoOverlay extends TextOverlay {
 									EnumChatFormatting.RED + " try revisiting all pages of /pets."));
 						}
 					}
-				} else if ((chatMessage.toLowerCase().startsWith("you despawned your")) || (chatMessage.toLowerCase().contains(
+				} else if ((chatMessage.toLowerCase(Locale.ROOT).startsWith("you despawned your")) || (chatMessage.toLowerCase(Locale.ROOT).contains(
 					"switching to profile"))
-					|| (chatMessage.toLowerCase().contains("transferring you to a new island..."))) {
+					|| (chatMessage.toLowerCase(Locale.ROOT).contains("transferring you to a new island..."))) {
 					clearPet();
 				}
 			}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/CalendarOverlay.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/CalendarOverlay.java
index 1a50dfe4..f2af715c 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/CalendarOverlay.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/CalendarOverlay.java
@@ -69,6 +69,7 @@ import java.time.temporal.ChronoUnit;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
@@ -971,7 +972,7 @@ public class CalendarOverlay {
 
 	private static String getIdForDisplayName(String displayName) {
 		return Utils.cleanColour(displayName)
-								.toLowerCase()
+								.toLowerCase(Locale.ROOT)
 								.replaceAll("[0-9]+th", "")
 								.replaceAll("[0-9]+nd", "")
 								.replaceAll("[0-9]+rd", "")
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiCustomEnchant.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiCustomEnchant.java
index 6d219999..3041ee43 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiCustomEnchant.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiCustomEnchant.java
@@ -65,6 +65,7 @@ import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Objects;
 import java.util.Random;
 import java.util.regex.Matcher;
@@ -381,7 +382,7 @@ public class GuiCustomEnchant extends Gui {
 								if (enchantments != null) {
 									String enchId = Utils
 										.cleanColour(book.getDisplayName())
-										.toLowerCase()
+										.toLowerCase(Locale.ROOT)
 										.replace(" ", "_")
 										.replace("-", "_")
 										.replaceAll("[^a-z_]", "");
@@ -396,7 +397,7 @@ public class GuiCustomEnchant extends Gui {
 									}
 									Matcher levelMatcher = ENCHANT_LEVEL_PATTERN.matcher(enchId);
 									if (levelMatcher.matches()) {
-										enchLevel = Utils.parseRomanNumeral(levelMatcher.group(2).toUpperCase());
+										enchLevel = Utils.parseRomanNumeral(levelMatcher.group(2).toUpperCase(Locale.ROOT));
 										enchId = levelMatcher.group(1);
 									}
 									Enchantment enchantment = new Enchantment(slotIndex, name, enchId,
@@ -457,7 +458,7 @@ public class GuiCustomEnchant extends Gui {
 									if (enchantments != null) {
 										String enchId = Utils
 											.cleanColour(book.getDisplayName())
-											.toLowerCase()
+											.toLowerCase(Locale.ROOT)
 											.replace(" ", "_")
 											.replace("-", "_")
 											.replaceAll("[^a-z_]", "");
@@ -466,7 +467,7 @@ public class GuiCustomEnchant extends Gui {
 										String name = Utils.cleanColour(book.getDisplayName());
 
 										if (searchField.getText().trim().isEmpty() ||
-											name.toLowerCase().contains(searchField.getText().trim().toLowerCase())) {
+											name.toLowerCase(Locale.ROOT).contains(searchField.getText().trim().toLowerCase(Locale.ROOT))) {
 											if (name.equalsIgnoreCase("Bane of Arthropods")) {
 												name = "Bane of Arth.";
 											} else if (name.equalsIgnoreCase("Projectile Protection")) {
@@ -512,7 +513,7 @@ public class GuiCustomEnchant extends Gui {
 					Comparator<Enchantment> comparator = cfg.enchantingSolvers.enchantSorting == 0 ?
 						Comparator.comparingInt(e -> mult * e.xpCost) :
 						(c1, c2) -> mult *
-							c1.enchId.toLowerCase().compareTo(c2.enchId.toLowerCase());
+							c1.enchId.toLowerCase(Locale.ROOT).compareTo(c2.enchId.toLowerCase(Locale.ROOT));
 					removable.sort(comparator);
 					applicable.sort(comparator);
 				}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiEnchantColour.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiEnchantColour.java
index 174650d9..86ea09f9 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiEnchantColour.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiEnchantColour.java
@@ -22,10 +22,7 @@ package io.github.moulberry.notenoughupdates.miscgui;
 import com.google.common.base.Splitter;
 import com.google.common.collect.Lists;
 import com.google.gson.JsonArray;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonParser;
 import com.google.gson.JsonPrimitive;
-import info.bliki.api.Template;
 import io.github.moulberry.notenoughupdates.NotEnoughUpdates;
 import io.github.moulberry.notenoughupdates.core.util.lerp.LerpingInteger;
 import io.github.moulberry.notenoughupdates.itemeditor.GuiElementTextField;
@@ -48,11 +45,10 @@ import java.awt.datatransfer.DataFlavor;
 import java.awt.datatransfer.StringSelection;
 import java.awt.datatransfer.UnsupportedFlavorException;
 import java.io.IOException;
-import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
-import java.util.Base64;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Objects;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -154,8 +150,8 @@ public class GuiEnchantColour extends GuiScreen {
 			String modifier = getColourOpIndex(colourOps, 4);
 			modifiers.put(yIndex, modifier);
 
-			if (colourCode.length() > 1) colourCode = String.valueOf(colourCode.toLowerCase().charAt(0));
-			if (comparator.length() > 1) comparator = String.valueOf(comparator.toLowerCase().charAt(0));
+			if (colourCode.length() > 1) colourCode = String.valueOf(colourCode.toLowerCase(Locale.ROOT).charAt(0));
+			if (comparator.length() > 1) comparator = String.valueOf(comparator.toLowerCase(Locale.ROOT).charAt(0));
 
 			Utils.drawStringCentered(comparator, guiLeft + 96, guiTop + 33 + 25 * yIndex, false, 4210752);
 
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiNavigation.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiNavigation.java
index ba3f95df..6e36179a 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiNavigation.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/GuiNavigation.java
@@ -32,6 +32,7 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
+import java.util.Locale;
 import java.util.stream.Collectors;
 
 public class GuiNavigation extends GuiScreen {
@@ -114,14 +115,14 @@ public class GuiNavigation extends GuiScreen {
 	}
 
 	private void refreshResults() {
-		String text = textField.getText().toLowerCase();
+		String text = textField.getText().toLowerCase(Locale.ROOT);
 		List<String> results = NotEnoughUpdates.INSTANCE.navigation
 			.getWaypoints()
 			.values()
 			.stream()
 			.filter(it ->
-				it.get("internalname").getAsString().toLowerCase().contains(text)
-					|| it.get("displayname").getAsString().toLowerCase().contains(text))
+				it.get("internalname").getAsString().toLowerCase(Locale.ROOT).contains(text)
+					|| it.get("displayname").getAsString().toLowerCase(Locale.ROOT).contains(text))
 			.map(it -> it.get("internalname").getAsString())
 			.sorted(Comparator.comparing(String::length)
 												.thenComparing(String.CASE_INSENSITIVE_ORDER))
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/hex/GuiCustomHex.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/hex/GuiCustomHex.java
index 1da81605..f2b7b1c8 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/hex/GuiCustomHex.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/hex/GuiCustomHex.java
@@ -72,6 +72,7 @@ import java.util.Arrays;
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Objects;
 import java.util.Random;
 import java.util.regex.Matcher;
@@ -116,7 +117,7 @@ public class GuiCustomHex extends Gui {
 				}
 			}
 			JsonObject bazaarInfo = NotEnoughUpdates.INSTANCE.manager.auctionManager.getBazaarInfo(
-				(isUlt ? "ULTIMATE_" : "") + enchId.toUpperCase() + ";" + level);
+				(isUlt ? "ULTIMATE_" : "") + enchId.toUpperCase(Locale.ROOT) + ";" + level);
 			if (bazaarInfo != null && bazaarInfo.get("curr_buy") != null) {
 				this.price = bazaarInfo.get("curr_buy").getAsInt();
 			}
@@ -476,7 +477,7 @@ public class GuiCustomHex extends Gui {
 								if (enchantments != null) {
 									String enchId = Utils
 										.cleanColour(book.getDisplayName())
-										.toLowerCase()
+										.toLowerCase(Locale.ROOT)
 										.replace(" ", "_")
 										.replace("-", "_")
 										.replaceAll("[^a-z_]", "");
@@ -493,7 +494,7 @@ public class GuiCustomHex extends Gui {
 									}
 									Matcher levelMatcher = ENCHANT_LEVEL_PATTERN.matcher(enchId);
 									if (levelMatcher.matches()) {
-										enchLevel = Utils.parseRomanNumeral(levelMatcher.group(2).toUpperCase());
+										enchLevel = Utils.parseRomanNumeral(levelMatcher.group(2).toUpperCase(Locale.ROOT));
 										enchId = levelMatcher.group(1);
 									}
 									Enchantment enchantment = new Enchantment(slotIndex, name, enchId,
@@ -595,7 +596,7 @@ public class GuiCustomHex extends Gui {
 									if (enchantments != null) {
 										String enchId = Utils
 											.cleanColour(book.getDisplayName())
-											.toLowerCase()
+											.toLowerCase(Locale.ROOT)
 											.replace(" ", "_")
 											.replace("-", "_")
 											.replaceAll("[^a-z_]", "");
@@ -604,7 +605,7 @@ public class GuiCustomHex extends Gui {
 										String name = Utils.cleanColour(book.getDisplayName());
 
 										if (searchField.getText().trim().isEmpty() ||
-											name.toLowerCase().contains(searchField.getText().trim().toLowerCase())) {
+											name.toLowerCase(Locale.ROOT).contains(searchField.getText().trim().toLowerCase(Locale.ROOT))) {
 											if (name.equalsIgnoreCase("Bane of Arthropods")) {
 												name = "Bane of Arth.";
 											} else if (name.equalsIgnoreCase("Projectile Protection")) {
@@ -650,7 +651,7 @@ public class GuiCustomHex extends Gui {
 					Comparator<Enchantment> comparator = cfg.enchantingSolvers.enchantSorting == 0 ?
 						Comparator.comparingInt(e -> mult * e.xpCost) :
 						(c1, c2) -> mult *
-							c1.enchId.toLowerCase().compareTo(c2.enchId.toLowerCase());
+							c1.enchId.toLowerCase(Locale.ROOT).compareTo(c2.enchId.toLowerCase(Locale.ROOT));
 					removable.sort(comparator);
 					applicable.sort(comparator);
 				}
@@ -798,7 +799,7 @@ public class GuiCustomHex extends Gui {
 						if (ea != null) {
 							NBTTagCompound enchantments = ea.getCompoundTag("enchantments");
 							if (enchantments != null) {
-								String itemId = Utils.cleanColour(book.getDisplayName()).toUpperCase().replace(" ", "_").replace(
+								String itemId = Utils.cleanColour(book.getDisplayName()).toUpperCase(Locale.ROOT).replace(" ", "_").replace(
 									"-",
 									"_"
 								);
@@ -806,7 +807,7 @@ public class GuiCustomHex extends Gui {
 								if (itemId.equalsIgnoreCase("_")) continue;
 								if (itemId.equalsIgnoreCase("Item_Maxed_Out")) continue;
 								if (searchField.getText().trim().isEmpty() ||
-									name.toLowerCase().contains(searchField.getText().trim().toLowerCase())) {
+									name.toLowerCase(Locale.ROOT).contains(searchField.getText().trim().toLowerCase(Locale.ROOT))) {
 									name = fixName(name);
 									/*if (playerEnchantIds.containsKey(itemId)) {
 										HexItem item = new HexItem(slotIndex, name, itemId,
@@ -966,7 +967,7 @@ public class GuiCustomHex extends Gui {
 			Comparator<HexItem> comparator = cfg.enchantingSolvers.enchantSorting == 0 ?
 				Comparator.comparingInt(e -> (int) (mult * e.price)) :
 				(c1, c2) -> mult *
-					c1.itemId.toLowerCase().compareTo(c2.itemId.toLowerCase());
+					c1.itemId.toLowerCase(Locale.ROOT).compareTo(c2.itemId.toLowerCase(Locale.ROOT));
 			removableItem.sort(comparator);
 			applicableItem.sort(comparator);
 		}
@@ -1040,7 +1041,7 @@ public class GuiCustomHex extends Gui {
 						if (ea != null) {
 							NBTTagCompound enchantments = ea.getCompoundTag("enchantments");
 							if (enchantments != null) {
-								String itemId = Utils.cleanColour(book.getDisplayName()).toUpperCase().replace(" ", "_").replace(
+								String itemId = Utils.cleanColour(book.getDisplayName()).toUpperCase(Locale.ROOT).replace(" ", "_").replace(
 									"-",
 									"_"
 								);
@@ -1048,7 +1049,7 @@ public class GuiCustomHex extends Gui {
 								if (itemId.equalsIgnoreCase("_")) continue;
 								if (itemId.equalsIgnoreCase("Item_Maxed_Out")) continue;
 								if (searchField.getText().trim().isEmpty() ||
-									name.toLowerCase().contains(searchField.getText().trim().toLowerCase())) {
+									name.toLowerCase(Locale.ROOT).contains(searchField.getText().trim().toLowerCase(Locale.ROOT))) {
 									if (name.equalsIgnoreCase("Ultimate Enchantments")) {
 										name = "Ult Enchants";
 									}
@@ -1085,7 +1086,7 @@ public class GuiCustomHex extends Gui {
 			Comparator<HexItem> comparator = cfg.enchantingSolvers.enchantSorting == 0 ?
 				Comparator.comparingInt(e -> (int) (mult * e.price)) :
 				(c1, c2) -> mult *
-					c1.itemId.toLowerCase().compareTo(c2.itemId.toLowerCase());
+					c1.itemId.toLowerCase(Locale.ROOT).compareTo(c2.itemId.toLowerCase(Locale.ROOT));
 			removableItem.sort(comparator);
 			applicableItem.sort(comparator);
 		}
@@ -1187,7 +1188,7 @@ public class GuiCustomHex extends Gui {
 						if (ea != null) {
 							NBTTagCompound enchantments = ea.getCompoundTag("enchantments");
 							if (enchantments != null) {
-								String itemId = Utils.cleanColour(book.getDisplayName()).toUpperCase().replace(" ", "_").replace(
+								String itemId = Utils.cleanColour(book.getDisplayName()).toUpperCase(Locale.ROOT).replace(" ", "_").replace(
 									"-",
 									"_"
 								);
@@ -1195,7 +1196,7 @@ public class GuiCustomHex extends Gui {
 								if (itemId.equalsIgnoreCase("_")) continue;
 								if (itemId.equalsIgnoreCase("Item_Maxed_Out")) continue;
 								if (searchField.getText().trim().isEmpty() ||
-									name.toLowerCase().contains(searchField.getText().trim().toLowerCase())) {
+									name.toLowerCase(Locale.ROOT).contains(searchField.getText().trim().toLowerCase(Locale.ROOT))) {
 									/*if (playerEnchantIds.containsKey(itemId)) {
 										HexItem item = new HexItem(slotIndex, name, itemId,
 											Utils.getRawTooltip(book), false, false
@@ -1247,7 +1248,7 @@ public class GuiCustomHex extends Gui {
 			Comparator<HexItem> comparator = cfg.enchantingSolvers.enchantSorting == 0 ?
 				Comparator.comparingInt(e -> (int) (mult * e.price)) :
 				(c1, c2) -> mult *
-					c1.itemId.toLowerCase().compareTo(c2.itemId.toLowerCase());
+					c1.itemId.toLowerCase(Locale.ROOT).compareTo(c2.itemId.toLowerCase(Locale.ROOT));
 			removableItem.sort(comparator);
 			applicableItem.sort(comparator);
 		}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/hex/HexItem.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/hex/HexItem.java
index 8d28dd1d..ab871888 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/hex/HexItem.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/hex/HexItem.java
@@ -26,6 +26,7 @@ import io.github.moulberry.notenoughupdates.util.Utils;
 import net.minecraft.util.StringUtils;
 
 import java.util.List;
+import java.util.Locale;
 
 public class HexItem {
 	public int slotIndex;
@@ -255,8 +256,8 @@ public class HexItem {
 
 	public String getReforge() {
 		JsonObject reforgeStones = Constants.REFORGESTONES;
-		if (reforgeStones != null && reforgeStones.has(this.itemId.toUpperCase())) {
-			JsonObject reforgeInfo = reforgeStones.get(this.itemId.toUpperCase()).getAsJsonObject();
+		if (reforgeStones != null && reforgeStones.has(this.itemId.toUpperCase(Locale.ROOT))) {
+			JsonObject reforgeInfo = reforgeStones.get(this.itemId.toUpperCase(Locale.ROOT)).getAsJsonObject();
 			if (reforgeInfo != null) {
 				return Utils.getElementAsString(reforgeInfo.get("reforgeName"), "");
 			}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/MinionHelperManager.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/MinionHelperManager.java
index 03eb227c..16ad9d00 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/MinionHelperManager.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/MinionHelperManager.java
@@ -40,6 +40,7 @@ import net.minecraftforge.common.MinecraftForge;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 
 @NEUAutoSubscribe
@@ -123,7 +124,7 @@ public class MinionHelperManager {
 	}
 
 	public String formatInternalName(String minionName) {
-		return minionName.toUpperCase().replace(" ", "_");
+		return minionName.toUpperCase(Locale.ROOT).replace(" ", "_");
 	}
 
 	private List<Minion> getChildren(Minion minion) {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/loaders/repo/MinionHelperRepoMinionLoader.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/loaders/repo/MinionHelperRepoMinionLoader.java
index 6abc5c56..8d2aaaf4 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/loaders/repo/MinionHelperRepoMinionLoader.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/loaders/repo/MinionHelperRepoMinionLoader.java
@@ -31,6 +31,7 @@ import io.github.moulberry.notenoughupdates.miscgui.minionhelper.requirements.Sl
 import io.github.moulberry.notenoughupdates.miscgui.minionhelper.sources.CraftingSource;
 import io.github.moulberry.notenoughupdates.util.Utils;
 
+import java.util.Locale;
 import java.util.Map;
 import java.util.TreeMap;
 import java.util.regex.Pattern;
@@ -97,7 +98,7 @@ public class MinionHelperRepoMinionLoader {
 						}
 						case "slayer_req": {
 							String[] split = value.split("_");
-							String slayerType = split[0].toLowerCase();
+							String slayerType = split[0].toLowerCase(Locale.ROOT);
 							int tier = Integer.parseInt(split[1]);
 							minion.getRequirements().add(new SlayerRequirement(slayerType, tier));
 							break;
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/render/MinionHelperOverlayHover.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/render/MinionHelperOverlayHover.java
index 18b26754..df3559ba 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/render/MinionHelperOverlayHover.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/render/MinionHelperOverlayHover.java
@@ -45,6 +45,7 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 
 public class MinionHelperOverlayHover {
@@ -227,7 +228,7 @@ public class MinionHelperOverlayHover {
 				int need = reputationRequirement.getReputation();
 				if (having < 0) having = 0;
 
-				String reputationName = StringUtils.firstUpperLetter(reputationType.toLowerCase());
+				String reputationName = StringUtils.firstUpperLetter(reputationType.toLowerCase(Locale.ROOT));
 				String havingFormat = Utils.formatNumberWithDots(having);
 				String needFormat = Utils.formatNumberWithDots(need);
 				description = "Reputation: §c" + havingFormat + "§8/§c" + needFormat + " §7" + reputationName + " Reputation";
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/requirements/ReputationRequirement.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/requirements/ReputationRequirement.java
index 70d1e5fc..8aaad623 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/requirements/ReputationRequirement.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/minionhelper/requirements/ReputationRequirement.java
@@ -22,6 +22,8 @@ package io.github.moulberry.notenoughupdates.miscgui.minionhelper.requirements;
 import io.github.moulberry.notenoughupdates.core.util.StringUtils;
 import io.github.moulberry.notenoughupdates.util.Utils;
 
+import java.util.Locale;
+
 public class ReputationRequirement extends MinionRequirement {
 
 	private final String reputationType;
@@ -32,7 +34,7 @@ public class ReputationRequirement extends MinionRequirement {
 		this.reputationType = reputationType;
 		this.reputation = reputation;
 
-		String reputationName = StringUtils.firstUpperLetter(reputationType.toLowerCase());
+		String reputationName = StringUtils.firstUpperLetter(reputationType.toLowerCase(Locale.ROOT));
 		description = Utils.formatNumberWithDots(reputation) + " §7" + reputationName + " Reputation";
 	}
 
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/overlays/MiningOverlay.java b/src/main/java/io/github/moulberry/notenoughupdates/overlays/MiningOverlay.java
index 90433a51..ad5100e3 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/overlays/MiningOverlay.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/overlays/MiningOverlay.java
@@ -49,6 +49,7 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import java.util.function.Supplier;
@@ -836,7 +837,7 @@ public class MiningOverlay extends TextTabOverlay {
 				icon = miningOverlayCommissionItems.get("Mithril");
 			} else if (beforeColon.endsWith(" Gemstone Collector")) {
 				String gemName = "ROUGH_"
-					+ beforeColon.replace(" Gemstone Collector", "").toUpperCase() + "_GEM";
+					+ beforeColon.replace(" Gemstone Collector", "").toUpperCase(Locale.ROOT) + "_GEM";
 				if (miningOverlayRoughGems.containsKey(gemName)) {
 					icon = miningOverlayRoughGems.get(gemName);
 				} else {
@@ -847,7 +848,7 @@ public class MiningOverlay extends TextTabOverlay {
 				}
 			} else if (beforeColon.endsWith(" Crystal Hunter")) {
 				String gemName = "PERFECT_"
-					+ beforeColon.replace(" Crystal Hunter", "").toUpperCase() + "_GEM";
+					+ beforeColon.replace(" Crystal Hunter", "").toUpperCase(Locale.ROOT) + "_GEM";
 				if (miningOverlayPerfectGems.containsKey(gemName)) {
 					icon = miningOverlayPerfectGems.get(gemName);
 				} else {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/BasicPage.java b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/BasicPage.java
index 025b09b7..60099e2b 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/BasicPage.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/BasicPage.java
@@ -65,6 +65,7 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Optional;
 import java.util.UUID;
@@ -695,7 +696,7 @@ public class BasicPage extends GuiProfileViewerPage {
 						String totalXpS = StringUtils.formatNumber((long) level.totalXp);
 						tooltipToDisplay.add(EnumChatFormatting.GRAY + "Total XP: " + EnumChatFormatting.DARK_PURPLE + totalXpS +
 							EnumChatFormatting.DARK_GRAY + " (" +
-							StringUtils.formatToTenths(guiProfileViewer.getPercentage(entry.getKey().toLowerCase(), level)) +
+							StringUtils.formatToTenths(guiProfileViewer.getPercentage(entry.getKey().toLowerCase(Locale.ROOT), level)) +
 							"% to " + level.maxLevel + ")");
 						if (entry.getKey().equals("farming")) {
 							// double drops + pelts
@@ -715,7 +716,7 @@ public class BasicPage extends GuiProfileViewerPage {
 							tooltipToDisplay.add(" ");
 							for (String medalName : medalNames) {
 								String textWithoutFormattingCodes =
-									EnumChatFormatting.getTextWithoutFormattingCodes(medalName.toLowerCase());
+									EnumChatFormatting.getTextWithoutFormattingCodes(medalName.toLowerCase(Locale.ROOT));
 								if (medals_inv.has(textWithoutFormattingCodes)) {
 									int medalAmount = medals_inv.get(textWithoutFormattingCodes).getAsInt();
 									tooltipToDisplay.add(EnumChatFormatting.GRAY + WordUtils.capitalize(medalName) + ": " +
@@ -727,7 +728,7 @@ public class BasicPage extends GuiProfileViewerPage {
 							}
 						}
 
-						String slayerNameLower = entry.getKey().toLowerCase();
+						String slayerNameLower = entry.getKey().toLowerCase(Locale.ROOT);
 						if (Weight.SLAYER_NAMES.contains(slayerNameLower)) {
 							JsonObject slayerToTier = Constants.LEVELING.getAsJsonObject("slayer_to_highest_tier");
 							if (slayerToTier == null) {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/GuiProfileViewer.java b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/GuiProfileViewer.java
index ba42834c..08340f23 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/GuiProfileViewer.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/GuiProfileViewer.java
@@ -63,6 +63,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
@@ -719,13 +720,13 @@ public class GuiProfileViewer extends GuiScreen {
 
 		boolean selected = Objects.equals(Minecraft.getMinecraft().thePlayer.getName(), playerName);
 		if (selected == renderCurrent) {
-			renderRecentPlayer(Minecraft.getMinecraft().thePlayer.getName().toLowerCase(), 0, selected);
+			renderRecentPlayer(Minecraft.getMinecraft().thePlayer.getName().toLowerCase(Locale.ROOT), 0, selected);
 		}
 
 		List<String> previousProfileSearches = NotEnoughUpdates.INSTANCE.config.hidden.previousProfileSearches;
 
 		for (int i = 0; i < previousProfileSearches.size(); i++) {
-			selected = Objects.equals(previousProfileSearches.get(i), playerName.toLowerCase());
+			selected = Objects.equals(previousProfileSearches.get(i), playerName.toLowerCase(Locale.ROOT));
 			if (selected == renderCurrent) {
 				renderRecentPlayer(previousProfileSearches.get(i), i + 1, selected);
 			}
@@ -827,7 +828,7 @@ public class GuiProfileViewer extends GuiScreen {
 
 		if (mouseX > x && mouseX < x + 29) {
 			if (mouseY > y && mouseY < y + 28) {
-				if (!playerName.equals(Minecraft.getMinecraft().thePlayer.getName().toLowerCase())) {
+				if (!playerName.equals(Minecraft.getMinecraft().thePlayer.getName().toLowerCase(Locale.ROOT))) {
 					NotEnoughUpdates.profileViewer.loadPlayerByName(Minecraft.getMinecraft().thePlayer.getName(), profile -> {
 						profile.resetCache();
 						NotEnoughUpdates.INSTANCE.openGui = new GuiProfileViewer(profile);
@@ -988,7 +989,7 @@ public class GuiProfileViewer extends GuiScreen {
 			renderGoldBar(x, y + 6, xSize);
 		} else {
 			if ((skillName.contains("Catacombs") || Weight.DUNGEON_CLASS_NAMES.stream().anyMatch(e -> skillName
-				.toLowerCase()
+				.toLowerCase(Locale.ROOT)
 				.contains(e))) && levelObj.level >= 50) {
 				renderGoldBar(x, y + 6, xSize);
 			} else {
@@ -1003,7 +1004,7 @@ public class GuiProfileViewer extends GuiScreen {
 				if (skillName.contains("Catacombs")) {
 					totalXpStr = EnumChatFormatting.GRAY + "Total XP: " + EnumChatFormatting.DARK_PURPLE +
 						StringUtils.formatNumber(levelObj.totalXp) + EnumChatFormatting.DARK_GRAY + " (" +
-						StringUtils.formatToTenths(getPercentage(skillName.toLowerCase(), levelObj)) + "% to 50)";
+						StringUtils.formatToTenths(getPercentage(skillName.toLowerCase(Locale.ROOT), levelObj)) + "% to 50)";
 				}
 				// Adds overflow level to each level object that is maxed, avoids hotm level as there is no overflow xp for it
 				if (levelObj.maxed) {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/PlayerStats.java b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/PlayerStats.java
index 2f9ca90b..2b8ebf12 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/PlayerStats.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/PlayerStats.java
@@ -40,6 +40,7 @@ import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.Locale;
 import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -182,7 +183,7 @@ public class PlayerStats {
 
 		int petScore = 0;
 		for (String value : highestRarityMap.values()) {
-			petScore += Utils.getElementAsFloat(Utils.getElement(bonuses, "pet_value." + value.toUpperCase()), 0);
+			petScore += Utils.getElementAsFloat(Utils.getElement(bonuses, "pet_value." + value.toUpperCase(Locale.ROOT)), 0);
 		}
 		return petScore;
 	}
@@ -522,7 +523,7 @@ public class PlayerStats {
 						float statMin = min.get("statNums").getAsJsonObject().get(entry.getKey()).getAsFloat();
 						float val = statMin * minMix + statMax * maxMix;
 
-						stats.addStat(entry.getKey().toLowerCase(), (int) Math.floor(val));
+						stats.addStat(entry.getKey().toLowerCase(Locale.ROOT), (int) Math.floor(val));
 					}
 				}
 
@@ -531,7 +532,7 @@ public class PlayerStats {
 					HashMap<String, Float> petStatBootsMult = GuiProfileViewer.PET_STAT_BOOSTS_MULT.get(heldItem);
 					if (petStatBoots != null) {
 						for (Map.Entry<String, Float> entryBoost : petStatBoots.entrySet()) {
-							String key = entryBoost.getKey().toLowerCase();
+							String key = entryBoost.getKey().toLowerCase(Locale.ROOT);
 							try {
 								stats.addStat(key, entryBoost.getValue());
 							} catch (Exception ignored) {}
@@ -539,7 +540,7 @@ public class PlayerStats {
 					}
 					if (petStatBootsMult != null) {
 						for (Map.Entry<String, Float> entryBoost : petStatBootsMult.entrySet()) {
-							String key = entryBoost.getKey().toLowerCase();
+							String key = entryBoost.getKey().toLowerCase(Locale.ROOT);
 							try {
 								stats.scale(key, entryBoost.getValue());
 							} catch (Exception ignored) {}
@@ -664,7 +665,7 @@ public class PlayerStats {
 			return null;
 		}
 		String selectedPower = profileInfo.get(abs).getAsJsonObject().get("selected_power").getAsString();
-		return selectedPower.substring(0, 1).toUpperCase() + selectedPower.substring(1);
+		return selectedPower.substring(0, 1).toUpperCase(Locale.ROOT) + selectedPower.substring(1);
 	}
 
 	public static @Nullable QuiverInfo getQuiverInfo(Map<String, JsonArray> inventoryInfo, JsonObject profileInfo) {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/ProfileViewer.java b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/ProfileViewer.java
index ca588d7c..0418108f 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/ProfileViewer.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/ProfileViewer.java
@@ -34,6 +34,7 @@ import net.minecraft.util.EnumChatFormatting;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.Consumer;
 
@@ -513,7 +514,7 @@ public class ProfileViewer {
 	}
 
 	public void getPlayerUUID(String name, Consumer<String> uuidCallback) {
-		String nameLower = name.toLowerCase();
+		String nameLower = name.toLowerCase(Locale.ROOT);
 		if (nameToUuid.containsKey(nameLower)) {
 			uuidCallback.accept(nameToUuid.get(nameLower));
 			return;
@@ -536,7 +537,7 @@ public class ProfileViewer {
 	}
 
 	public void loadPlayerByName(String name, Consumer<SkyblockProfiles> callback) {
-		String nameLower = name.toLowerCase();
+		String nameLower = name.toLowerCase(Locale.ROOT);
 
 		if (nameToUuid.containsKey(nameLower) && nameToUuid.get(nameLower) == null) {
 			callback.accept(null);
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/ProfileViewerUtils.java b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/ProfileViewerUtils.java
index 038b9e14..f56f1fd1 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/ProfileViewerUtils.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/ProfileViewerUtils.java
@@ -46,6 +46,7 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
@@ -224,8 +225,8 @@ public class ProfileViewerUtils {
 
 	public static void saveSearch(String username) {
 		if (username == null) return;
-		String nameLower = username.toLowerCase();
-		if (nameLower.equals(Minecraft.getMinecraft().thePlayer.getName().toLowerCase())) return;
+		String nameLower = username.toLowerCase(Locale.ROOT);
+		if (nameLower.equals(Minecraft.getMinecraft().thePlayer.getName().toLowerCase(Locale.ROOT))) return;
 		List<String> previousProfileSearches = NotEnoughUpdates.INSTANCE.config.hidden.previousProfileSearches;
 		previousProfileSearches.remove(nameLower);
 		previousProfileSearches.add(0, nameLower);
@@ -244,7 +245,7 @@ public class ProfileViewerUtils {
 
 	public static ItemStack getPlayerData(String username) {
 		if (username == null) return new ItemStack(Blocks.stone);
-		String nameLower = username.toLowerCase();
+		String nameLower = username.toLowerCase(Locale.ROOT);
 		if (!playerSkullCache.containsKey(nameLower)) {
 			playerSkullCache.put(nameLower, fallBackSkull());
 
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/SkyblockProfiles.java b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/SkyblockProfiles.java
index 25111031..ebc35a39 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/SkyblockProfiles.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/SkyblockProfiles.java
@@ -58,6 +58,7 @@ import java.util.Comparator;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -925,7 +926,7 @@ public class SkyblockProfiles {
 					}
 				} else {
 					skillExperience += Utils.getElementAsFloat(
-						Utils.getElement(profileJson, "player_data.experience.SKILL_" + skillName.toUpperCase()),
+						Utils.getElement(profileJson, "player_data.experience.SKILL_" + skillName.toUpperCase(Locale.ROOT)),
 						0
 					);
 				}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/level/task/EssenceTaskLevel.java b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/level/task/EssenceTaskLevel.java
index 7d42ce30..478b9db2 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/level/task/EssenceTaskLevel.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/level/task/EssenceTaskLevel.java
@@ -31,6 +31,7 @@ import net.minecraft.util.EnumChatFormatting;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 
 public class EssenceTaskLevel extends GuiTaskLevel {
@@ -78,7 +79,7 @@ public class EssenceTaskLevel extends GuiTaskLevel {
 		for (Map.Entry<String, JsonElement> stringJsonElementEntry : essenceShopTask.entrySet()) {
 			String key = stringJsonElementEntry.getKey();
 			if (!key.endsWith("_shop")) continue;
-			String name = key.split("_shop")[0].toUpperCase();
+			String name = key.split("_shop")[0].toUpperCase(Locale.ROOT);
 			if (!loreMap.containsKey(name)) {
 				loreMap.put(name, new EssenceShop().setName(name).setCurrent(0));
 			}
@@ -99,7 +100,7 @@ public class EssenceTaskLevel extends GuiTaskLevel {
 			value.name = jsonObject
 				.get("displayname")
 				.getAsString();
-			String name = key.toLowerCase() + "_shop";
+			String name = key.toLowerCase(Locale.ROOT) + "_shop";
 			if (!essenceShopTask.has(name)) continue;
 			value.max = essenceShopTask.get(name).getAsInt();
 			lore.add(levelPage.buildLore(
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/rift/RiftPage.java b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/rift/RiftPage.java
index 721ba23b..924970f1 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/rift/RiftPage.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/rift/RiftPage.java
@@ -55,6 +55,7 @@ import java.util.Base64;
 import java.util.Collections;
 import java.util.List;
 import java.util.ListIterator;
+import java.util.Locale;
 
 public class RiftPage extends GuiProfileViewerPage {
 
@@ -199,7 +200,7 @@ public class RiftPage extends GuiProfileViewerPage {
 
 				List<String> displayNames = new ArrayList<>();
 				for (JsonElement jsonElement : timecharm) {
-					String timecharmType = jsonElement.getAsJsonObject().get("type").getAsString().toUpperCase();
+					String timecharmType = jsonElement.getAsJsonObject().get("type").getAsString().toUpperCase(Locale.ROOT);
 					ItemStack timecharmItem = NotEnoughUpdates.INSTANCE.manager.createItemResolutionQuery().withKnownInternalName(
 						"RIFT_TROPHY_" + timecharmType).resolveToItemStack();
 					if (timecharmItem != null) {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/trophy/TrophyFish.java b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/trophy/TrophyFish.java
index 5a3027c3..5984d452 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/trophy/TrophyFish.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/profileviewer/trophy/TrophyFish.java
@@ -19,6 +19,7 @@
 
 package io.github.moulberry.notenoughupdates.profileviewer.trophy;
 
+import java.util.Locale;
 import java.util.Map;
 
 public class TrophyFish {
@@ -59,7 +60,7 @@ public class TrophyFish {
 	}
 
 	public String getInternalName() {
-		return name.toLowerCase().replace(" ", "_");
+		return name.toLowerCase(Locale.ROOT).replace(" ", "_");
 	}
 
 	public enum TrophyFishRarity {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/util/ItemUtils.java b/src/main/java/io/github/moulberry/notenoughupdates/util/ItemUtils.java
index cc974841..c013ba06 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/util/ItemUtils.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/util/ItemUtils.java
@@ -48,6 +48,7 @@ import java.util.Arrays;
 import java.util.Base64;
 import java.util.Collections;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.function.BiFunction;
 
@@ -234,7 +235,7 @@ public class ItemUtils {
 			return stack;
 		}
 		String petname = currentPet.petType;
-		String tier = Utils.getRarityFromInt(currentPet.rarity.petId).toUpperCase();
+		String tier = Utils.getRarityFromInt(currentPet.rarity.petId).toUpperCase(Locale.ROOT);
 		String heldItem = currentPet.petItem;
 		String skin = currentPet.skin;
 		JsonObject heldItemJson = heldItem == null ? null : NotEnoughUpdates.INSTANCE.manager.getItemInformation().get(
@@ -410,13 +411,13 @@ public class ItemUtils {
 					NBTTagList newLore = new NBTTagList();
 					int maxLvl = 100;
 					if (Constants.PETS != null && Constants.PETS.has("custom_pet_leveling") &&
-						Constants.PETS.getAsJsonObject("custom_pet_leveling").has(pet.petType.toUpperCase()) &&
-						Constants.PETS.getAsJsonObject("custom_pet_leveling").getAsJsonObject(pet.petType.toUpperCase()).has(
+						Constants.PETS.getAsJsonObject("custom_pet_leveling").has(pet.petType.toUpperCase(Locale.ROOT)) &&
+						Constants.PETS.getAsJsonObject("custom_pet_leveling").getAsJsonObject(pet.petType.toUpperCase(Locale.ROOT)).has(
 							"max_level")) {
 						maxLvl =
 							Constants.PETS
 								.getAsJsonObject("custom_pet_leveling")
-								.getAsJsonObject(pet.petType.toUpperCase())
+								.getAsJsonObject(pet.petType.toUpperCase(Locale.ROOT))
 								.get("max_level")
 								.getAsInt();
 					}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/util/SBInfo.java b/src/main/java/io/github/moulberry/notenoughupdates/util/SBInfo.java
index 86799147..ebcae9c6 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/util/SBInfo.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/util/SBInfo.java
@@ -351,7 +351,7 @@ public class SBInfo {
 //				if (matcher.find()) {
 //					try {
 //						int level = Integer.parseInt(matcher.group(2).trim());
-//						XPInformation.getInstance().updateLevel(matcher.group(1).toLowerCase().trim(), level);
+//						XPInformation.getInstance().updateLevel(matcher.group(1).toLowerCase(Locale.ROOT).trim(), level);
 //					} catch (Exception ignored) {
 //					}
 //				}
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/util/Utils.java b/src/main/java/io/github/moulberry/notenoughupdates/util/Utils.java
index 6b597ebe..fee8c594 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/util/Utils.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/util/Utils.java
@@ -97,6 +97,7 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Locale;
 import java.util.TimeZone;
 import java.util.UUID;
 import java.util.regex.Matcher;
@@ -673,7 +674,7 @@ public class Utils {
 	}
 
 	public static String prettyCase(String str) {
-		return str.substring(0, 1).toUpperCase() + str.substring(1).toLowerCase();
+		return str.substring(0, 1).toUpperCase(Locale.ROOT) + str.substring(1).toLowerCase(Locale.ROOT);
 	}
 
 	public static String getRarityFromInt(int rarity) {
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/util/XPInformation.java b/src/main/java/io/github/moulberry/notenoughupdates/util/XPInformation.java
index 8336fbd0..ab8ece6c 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/util/XPInformation.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/util/XPInformation.java
@@ -35,6 +35,7 @@ import org.jetbrains.annotations.Nullable;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -78,8 +79,8 @@ public class XPInformation {
 	}
 
 	public @Nullable SkillInfo getSkillInfo(String skillName, boolean isHighlyInterested) {
-		var obj = skillInfoMap.get(skillName.toLowerCase());
-		if (isHighlyInterested && failedSkills.contains(skillName.toLowerCase())) {
+		var obj = skillInfoMap.get(skillName.toLowerCase(Locale.ROOT));
+		if (isHighlyInterested && failedSkills.contains(skillName.toLowerCase(Locale.ROOT))) {
 			TablistAPI.getWidgetLines(TablistAPI.WidgetNames.SKILLS);
 		}
 		return obj;
@@ -130,7 +131,7 @@ public class XPInformation {
 					skillInfo.level++;
 				}
 
-				skillInfoMap.put(skillS.toLowerCase(), skillInfo);
+				skillInfoMap.put(skillS.toLowerCase(Locale.ROOT), skillInfo);
 				return;
 			} else {
 				matcher = SKILL_PATTERN_PERCENTAGE.matcher(component);
@@ -139,11 +140,11 @@ public class XPInformation {
 					String xpPercentageS = matcher.group(3).replace(",", "");
 
 					float xpPercentage = Float.parseFloat(xpPercentageS);
-					if (updateWithPercentage.containsKey(skillS.toLowerCase())) {
-						failedSkills.add(skillS.toLowerCase());
+					if (updateWithPercentage.containsKey(skillS.toLowerCase(Locale.ROOT))) {
+						failedSkills.add(skillS.toLowerCase(Locale.ROOT));
 					}
-					updateWithPercentage.put(skillS.toLowerCase(), xpPercentage);
-					increment.put(skillS.toLowerCase(), Float.parseFloat(matcher.group(1).replace(",", "")));
+					updateWithPercentage.put(skillS.toLowerCase(Locale.ROOT), xpPercentage);
+					increment.put(skillS.toLowerCase(Locale.ROOT), Float.parseFloat(matcher.group(1).replace(",", "")));
 				} else {
 					matcher = SKILL_PATTERN_MULTIPLIER.matcher(component);
 
@@ -183,7 +184,7 @@ public class XPInformation {
 							skillInfo.level++;
 						}
 
-						skillInfoMap.put(skillS.toLowerCase(), skillInfo);
+						skillInfoMap.put(skillS.toLowerCase(Locale.ROOT), skillInfo);
 						return;
 					}
 				}
@@ -213,7 +214,7 @@ public class XPInformation {
 			var amountAsNumber = amount != null ? Double.parseDouble(amount.replace(",", "")) : null;
 			var isMax = matcher.group("max") != null;
 			// TODO: use this extra information for good (not evil)
-			updateLevel(type.toLowerCase(), level);
+			updateLevel(type.toLowerCase(Locale.ROOT), level);
 		}
 	}
 
@@ -239,8 +240,8 @@ public class XPInformation {
 				}
 			}
 
-			SkillInfo oldSkillInfo = skillInfoMap.get(skill.toLowerCase());
-			float inc = increment.getOrDefault(skill.toLowerCase(), 0F);
+			SkillInfo oldSkillInfo = skillInfoMap.get(skill.toLowerCase(Locale.ROOT));
+			float inc = increment.getOrDefault(skill.toLowerCase(Locale.ROOT), 0F);
 			if (oldSkillInfo != null && oldSkillInfo.totalXp + inc > newSkillInfo.totalXp && oldSkillInfo.totalXp - inc * 5 < newSkillInfo.totalXp) {
 				SkillInfo incrementedSkillInfo = new SkillInfo();
 				incrementedSkillInfo.totalXp = oldSkillInfo.totalXp + inc;
@@ -253,11 +254,11 @@ public class XPInformation {
 					incrementedSkillInfo.level < levelingArray.size() && incrementedSkillInfo.level >= 0
 						? levelingArray.get(incrementedSkillInfo.level).getAsFloat()
 						: 0F;
-				skillInfoMap.put(skill.toLowerCase(), incrementedSkillInfo);
+				skillInfoMap.put(skill.toLowerCase(Locale.ROOT), incrementedSkillInfo);
 			} else {
-				skillInfoMap.put(skill.toLowerCase(), newSkillInfo);
+				skillInfoMap.put(skill.toLowerCase(Locale.ROOT), newSkillInfo);
 			}
-			failedSkills.remove(skill.toLowerCase());
+			failedSkills.remove(skill.toLowerCase(Locale.ROOT));
 		}
 		updateWithPercentage.clear();
 	}