diff --git a/.changeset/kind-pears-perform.md b/.changeset/kind-pears-perform.md
new file mode 100644
index 00000000..2f1f89fd
--- /dev/null
+++ b/.changeset/kind-pears-perform.md
@@ -0,0 +1,5 @@
+---
+'@hono/eslint-config': patch
+---
+
+fix: `no-explicit-any` as `warn`
diff --git a/packages/eslint-config/index.js b/packages/eslint-config/index.js
index 4521d2a4..425cc145 100644
--- a/packages/eslint-config/index.js
+++ b/packages/eslint-config/index.js
@@ -54,6 +54,7 @@ module.exports = defineConfig({
 
     '@typescript-eslint/no-empty-function': ['error', { allow: ['arrowFunctions'] }],
     '@typescript-eslint/no-empty-interface': 'off',
+    '@typescript-eslint/no-explicit-any': 'warn',
     '@typescript-eslint/no-inferrable-types': 'off',
     '@typescript-eslint/no-var-requires': 'off',
     '@typescript-eslint/consistent-type-imports': ['error', { prefer: 'type-imports' }],
diff --git a/packages/swagger-ui/test/option-renderer.test.ts b/packages/swagger-ui/test/option-renderer.test.ts
index 50175152..0d2541b3 100644
--- a/packages/swagger-ui/test/option-renderer.test.ts
+++ b/packages/swagger-ui/test/option-renderer.test.ts
@@ -6,7 +6,7 @@ describe('SwaggerUIOption Rendering', () => {
       renderSwaggerUIOptions({
         configUrl: 'https://petstore3.swagger.io/api/v3/openapi.json',
       })
-    ).toEqual("configUrl: 'https://petstore3.swagger.io/api/v3/openapi.json'")
+    ).toEqual('configUrl: \'https://petstore3.swagger.io/api/v3/openapi.json\'')
   })
 
   it('renders correctly with presets', () => {
@@ -59,7 +59,7 @@ describe('SwaggerUIOption Rendering', () => {
       renderSwaggerUIOptions({
         url: 'https://petstore3.swagger.io/api/v3/openapi.json',
       })
-    ).toEqual("url: 'https://petstore3.swagger.io/api/v3/openapi.json'")
+    ).toEqual('url: \'https://petstore3.swagger.io/api/v3/openapi.json\'')
   })
 
   it('renders correctly with urls', () => {
@@ -82,7 +82,7 @@ describe('SwaggerUIOption Rendering', () => {
       renderSwaggerUIOptions({
         layout: 'StandaloneLayout',
       })
-    ).toEqual("layout: 'StandaloneLayout'")
+    ).toEqual('layout: \'StandaloneLayout\'')
   })
 
   it('renders correctly with docExpansion', () => {
@@ -90,7 +90,7 @@ describe('SwaggerUIOption Rendering', () => {
       renderSwaggerUIOptions({
         docExpansion: 'list',
       })
-    ).toEqual("docExpansion: 'list'")
+    ).toEqual('docExpansion: \'list\'')
   })
 
   it('renders correctly with maxDisplayedTags', () => {