diff --git a/package-lock.json b/package-lock.json
index d337b18..37ecfe9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,8 @@
       "license": "Apache-2.0",
       "dependencies": {
         "@line/bot-sdk": "^9.8.0",
-        "@modelcontextprotocol/sdk": "^1.8.0"
+        "@modelcontextprotocol/sdk": "^1.8.0",
+        "zod": "^3.24.2"
       },
       "devDependencies": {
         "@types/node": "^22",
diff --git a/package.json b/package.json
index 7340bbe..ada30c6 100644
--- a/package.json
+++ b/package.json
@@ -32,14 +32,16 @@
   "bugs": "https://github.com/line/line-bot-mcp-server/issues",
   "dependencies": {
     "@line/bot-sdk": "^9.8.0",
-    "@modelcontextprotocol/sdk": "^1.8.0"
+    "@modelcontextprotocol/sdk": "^1.8.0",
+    "zod": "^3.24.2"
   },
   "devDependencies": {
     "@types/node": "^22",
+    "prettier": "3.5.3",
     "shx": "^0.4.0",
     "tsx": "^4.19.3",
-    "typescript": "^5.6.2",
-    "prettier": "3.5.3"
+    "typescript": "^5.6.2"
   },
-  "license": "Apache-2.0"
+  "license": "Apache-2.0",
+  "packageManager": "pnpm@10.7.1+sha512.2d92c86b7928dc8284f53494fb4201f983da65f0fb4f0d40baafa5cf628fa31dae3e5968f12466f17df7e97310e30f343a648baea1b9b350685dafafffdf5808"
 }