diff --git a/playground/package.json b/playground/package.json
index 16065f7d..89aa475b 100644
--- a/playground/package.json
+++ b/playground/package.json
@@ -3,7 +3,8 @@
   "type": "module",
   "private": true,
   "scripts": {
-    "dev": "node --import tsx ../src/cli/index.ts"
+    "dev": "node --import tsx ../src/cli/index.ts",
+    "typecheck": "tsc --noEmit"
   },
   "dependencies": {
     "@hono/node-server": "^1.8.2",
diff --git a/tsconfig.json b/tsconfig.json
index 4d8ee155..2bcb0928 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,7 +2,7 @@
   // This configuration is used for local development and type checking.
   "extends": "./tsconfig.base.json",
   "exclude": ["templates/*", "create-frog/templates"],
-  "include": ["create-frog", "examples", "playground", "src"],
+  "include": ["create-frog", "examples", "src"],
   "compilerOptions": {
     "jsx": "react-jsx",
     "jsxImportSource": "hono/jsx"