diff --git a/packages/core/package.json b/packages/core/package.json
index 9977e3d..f380cbd 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -50,7 +50,7 @@
       }
     }
   },
-  "main": "./dist/index.cjs",
+  "main": "./dist/index.mjs",
   "module": "./dist/index.mjs",
   "types": "./dist/index.d.ts",
   "files": [