diff --git a/next-app/package.json b/next-app/package.json
index 59101eb..0188f19 100644
--- a/next-app/package.json
+++ b/next-app/package.json
@@ -3,6 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "scripts": {
+    "preinstall": "npx only-allow pnpm",  
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
diff --git a/ws/package.json b/ws/package.json
index fb7eaa4..fffdbbe 100644
--- a/ws/package.json
+++ b/ws/package.json
@@ -4,6 +4,7 @@
   "description": "",
   "main": "index.js",
   "scripts": {
+    "preinstall": "npx only-allow pnpm",
     "dev": "nodemon src/app.ts",
     "start": "node dist/app.js",
     "build": "prisma generate && tsc -b"
diff --git a/ws/pnpm-lock.yaml b/ws/pnpm-lock.yaml
index b010812..fdf2237 100644
--- a/ws/pnpm-lock.yaml
+++ b/ws/pnpm-lock.yaml
@@ -1042,4 +1042,4 @@ snapshots:
     dependencies:
       axios: 0.21.4
     transitivePeerDependencies:
-      - debug
+      - debug
\ No newline at end of file