diff --git a/package.json b/package.json
index 6575acc..766b591 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,9 @@
   "keywords": [
     "yeoman-generator"
   ],
+  "np": {
+    "packageManager": "yarn"
+  },
   "author": "TypeFox",
   "license": "EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0",
   "dependencies": {