diff --git a/CHANGELOG.md b/CHANGELOG.md
index 996785c..dfbe05d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 # Geode for VS Code Changelog
 
 ## [v1.18.0]
- - Geode 4.2.0 `mod.json` changes: `dependencies` may now be an object, and `dependencies` may specify `settings` for dependency-specific settings
+ - Geode 4.2.0 `mod.json` changes: `dependencies` and `incompatibilities` may now be objects, and `dependencies.[id]` may specify `settings` for dependency-specific settings
 
 ## [v1.17.0]
  - Rename `cheats` tag to `cheat` (#20, #21)
diff --git a/src/project/mod.ts b/src/project/mod.ts
index ede71eb..8b88062 100644
--- a/src/project/mod.ts
+++ b/src/project/mod.ts
@@ -433,11 +433,6 @@ export interface LegacyDependency extends Dependency {
 export type LegacyDependencies = LegacyDependency[];
 
 export interface Incompatibility {
-	/**
-	 * ID of the incompatability
-	 * @pattern [a-z0-9\-_]+\.[a-z0-9\-_]+
-	 */
-	id: string,
 	/**
 	 * Version of the incompatability. Geode assumes the mod follows [semver](https://semver.org); 
 	 * this means that versions "1.5.3" and "1.4.0" will be considered valid 
@@ -469,6 +464,18 @@ export interface Incompatibility {
 	 */
 	platforms?: ShortPlatformIDOrGeneric[],
 }
+export interface LegacyIncompatibility extends Incompatibility {
+	/**
+	 * ID of the incompatability
+	 * @pattern [a-z0-9\-_]+\.[a-z0-9\-_]+
+	 */
+	id: string,
+}
+/**
+ * @deprecated
+ * @deprecationMessage Use the object-style "incompatibilities" key instead
+ */
+export type LegacyIncompatibilities = LegacyIncompatibility[];
 
 /**
  * A tag for a mod. See [the docs](https://docs.geode-sdk.org/mods/configuring#tags) 
@@ -571,7 +578,7 @@ interface ModJsonBase {
 	/**
 	 * List of mods this mod is incompatible with
 	 */
-	incompatibilities?: Incompatibility[],
+	incompatibilities?: { [id: string]: Version | Dependency } | LegacyIncompatibilities,
 	resources?: Resources,
 	/**
 	 * The mod's settings. These are editable by the user in-game through the