diff --git a/package.json b/package.json
index b10599c..a93e508 100644
--- a/package.json
+++ b/package.json
@@ -16,5 +16,6 @@
     "astro": "^4.16.7",
     "@astrojs/check": "^0.9.4",
     "typescript": "^5.6.3"
-  }
+  },
+  "packageManager": "pnpm@9.12.1"
 }