diff --git a/package.json b/package.json
index f745f9e..fb8177f 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,8 @@
     "vinyl": "^2.2.1",
     "dumi": "^1.0.13",
     "prettier": "^2.2.1",
-    "yorkie": "^2.0.0"
+    "yorkie": "^2.0.0",
+    "pnpm":"^7.8.0"
   },
   "dependencies": {
     "cross-env": "^7.0.3",