diff --git a/src/main/java/net/fabricmc/loom/util/NestedJars.java b/src/main/java/net/fabricmc/loom/util/NestedJars.java
index bdb7ed4..2d57c8c 100644
--- a/src/main/java/net/fabricmc/loom/util/NestedJars.java
+++ b/src/main/java/net/fabricmc/loom/util/NestedJars.java
@@ -224,6 +224,10 @@ public class NestedJars {
 		jsonObject.addProperty("version", dependency.getModuleVersion());
 		jsonObject.addProperty("name", dependency.getModuleName());
 
+		JsonObject custom = new JsonObject();
+		custom.addProperty("fabric-loom:generated", true);
+		jsonObject.add("custom", custom);
+
 		return GSON.toJson(jsonObject);
 	}