diff --git a/package.json b/package.json
index 77ecff2..3e5e9f0 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,7 @@
     "typescript": "^5.9.3",
     "vitest": "^4.1.9"
   },
+  "packageManager": "pnpm@11.5.2",
   "engines": {
     "node": ">=22"
   }