diff --git a/.changeset/clean-fireants-promise.md b/.changeset/clean-fireants-promise.md
new file mode 100644
index 00000000..b9364589
--- /dev/null
+++ b/.changeset/clean-fireants-promise.md
@@ -0,0 +1,5 @@
+---
+'@hono/eslint-config': patch
+---
+
+fix: `no-unused-vars` as `warn`
diff --git a/packages/eslint-config/index.js b/packages/eslint-config/index.js
index 425cc145..9c496241 100644
--- a/packages/eslint-config/index.js
+++ b/packages/eslint-config/index.js
@@ -56,6 +56,7 @@ module.exports = defineConfig({
     '@typescript-eslint/no-empty-interface': 'off',
     '@typescript-eslint/no-explicit-any': 'warn',
     '@typescript-eslint/no-inferrable-types': 'off',
+    '@typescript-eslint/no-unused-vars': 'warn',
     '@typescript-eslint/no-var-requires': 'off',
     '@typescript-eslint/consistent-type-imports': ['error', { prefer: 'type-imports' }],
   },