diff --git a/aio/.angular-cli.json b/aio/.angular-cli.json
index 09bc7b2b71..a60ebea55e 100644
--- a/aio/.angular-cli.json
+++ b/aio/.angular-cli.json
@@ -68,5 +68,6 @@
     "build": {
       "namedChunks": true
     }
-  }
+  },
+  "packageManager": "yarn"
 }
diff --git a/integration/cli-hello-world/.angular-cli.json b/integration/cli-hello-world/.angular-cli.json
index 070b2644d6..2b19830864 100644
--- a/integration/cli-hello-world/.angular-cli.json
+++ b/integration/cli-hello-world/.angular-cli.json
@@ -56,5 +56,6 @@
   "defaults": {
     "styleExt": "css",
     "component": {}
-  }
+  },
+  "packageManager": "yarn"
 }