diff --git a/foomo/package.json b/foomo/package.json
index bd787ee..81e2832 100644
--- a/foomo/package.json
+++ b/foomo/package.json
@@ -50,5 +50,6 @@
   },
   "engines": {
     "node": ">=20"
-  }
+  },
+  "packageManager": "yarn@4.9.4"
 }