3 files changed, 5 insertions, 11 deletions
diff --git a/src/SMAPI.Toolkit.CoreInterfaces/IManifest.cs b/src/SMAPI.Toolkit.CoreInterfaces/IManifest.cs
index a9251446..ee6cc0b6 100644
--- a/src/SMAPI.Toolkit.CoreInterfaces/IManifest.cs
+++ b/src/SMAPI.Toolkit.CoreInterfaces/IManifest.cs
@@ -1,5 +1,3 @@
-#nullable disable
-
 using System.Collections.Generic;
 
 namespace StardewModdingAPI
@@ -23,16 +21,16 @@ namespace StardewModdingAPI
         ISemanticVersion Version { get; }
 
         /// <summary>The minimum SMAPI version required by this mod, if any.</summary>
-        ISemanticVersion MinimumApiVersion { get; }
+        ISemanticVersion? MinimumApiVersion { get; }
 
         /// <summary>The unique mod ID.</summary>
         string UniqueID { get; }
 
         /// <summary>The name of the DLL in the directory that has the <c>Entry</c> method. Mutually exclusive with <see cref="ContentPackFor"/>.</summary>
-        string EntryDll { get; }
+        string? EntryDll { get; }
 
         /// <summary>The mod which will read this as a content pack. Mutually exclusive with <see cref="EntryDll"/>.</summary>
-        IManifestContentPackFor ContentPackFor { get; }
+        IManifestContentPackFor? ContentPackFor { get; }
 
         /// <summary>The other mods that must be loaded before this mod.</summary>
         IManifestDependency[] Dependencies { get; }
diff --git a/src/SMAPI.Toolkit.CoreInterfaces/IManifestContentPackFor.cs b/src/SMAPI.Toolkit.CoreInterfaces/IManifestContentPackFor.cs
index d898b716..52ac8f1c 100644
--- a/src/SMAPI.Toolkit.CoreInterfaces/IManifestContentPackFor.cs
+++ b/src/SMAPI.Toolkit.CoreInterfaces/IManifestContentPackFor.cs
@@ -1,5 +1,3 @@
-#nullable disable
-
 namespace StardewModdingAPI
 {
     /// <summary>Indicates which mod can read the content pack represented by the containing manifest.</summary>
@@ -9,6 +7,6 @@ namespace StardewModdingAPI
         string UniqueID { get; }
 
         /// <summary>The minimum required version (if any).</summary>
-        ISemanticVersion MinimumVersion { get; }
+        ISemanticVersion? MinimumVersion { get; }
     }
 }
diff --git a/src/SMAPI.Toolkit.CoreInterfaces/IManifestDependency.cs b/src/SMAPI.Toolkit.CoreInterfaces/IManifestDependency.cs
index 49b7aed6..58425eb2 100644
--- a/src/SMAPI.Toolkit.CoreInterfaces/IManifestDependency.cs
+++ b/src/SMAPI.Toolkit.CoreInterfaces/IManifestDependency.cs
@@ -1,5 +1,3 @@
-#nullable disable
-
 namespace StardewModdingAPI
 {
     /// <summary>A mod dependency listed in a mod manifest.</summary>
@@ -12,7 +10,7 @@ namespace StardewModdingAPI
         string UniqueID { get; }
 
         /// <summary>The minimum required version (if any).</summary>
-        ISemanticVersion MinimumVersion { get; }
+        ISemanticVersion? MinimumVersion { get; }
 
         /// <summary>Whether the dependency must be installed to use the mod.</summary>
         bool IsRequired { get; }