1 files changed, 5 insertions, 2 deletions
diff --git a/src/StardewModdingAPI/IManifest.cs b/src/StardewModdingAPI/IManifest.cs
index 28f6570c..9513834a 100644
--- a/src/StardewModdingAPI/IManifest.cs
+++ b/src/StardewModdingAPI/IManifest.cs
@@ -32,11 +32,14 @@ namespace StardewModdingAPI
         /// <summary>The other mods that must be loaded before this mod.</summary>
         IManifestDependency[] Dependencies { get; }
 
+        /// <summary>The mod's unique ID in the Chucklefish mod site (if any), used for update checks.</summary>
+        string ChucklefishID { get; }
+
         /// <summary>The mod's unique ID in Nexus Mods (if any), used for update checks.</summary>
-        string NexusID { get; set; }
+        string NexusID { get; }
 
         /// <summary>The mod's organisation and project name on GitHub (if any), used for update checks.</summary>
-        string GitHubProject { get; set; }
+        string GitHubProject { get; }
 
         /// <summary>Any manifest fields which didn't match a valid field.</summary>
         IDictionary<string, object> ExtraFields { get; }