diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e1523a10..8eeb714c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -77,9 +77,9 @@ jobs:
       - uses: denoland/setup-deno@v1
         with:
           deno-version: v1.x
-      - run: env NAME=Deno deno test --coverage=coverage/raw/deno-runtime --allow-read --allow-env --allow-write --allow-net -c runtime_tests/deno/deno.json runtime_tests/deno
-      - run: deno test -c runtime_tests/deno-jsx/deno.precompile.json --coverage=coverage/raw/deno-precompile-jsx runtime_tests/deno-jsx
-      - run: deno test -c runtime_tests/deno-jsx/deno.react-jsx.json --coverage=coverage/raw/deno-react-jsx runtime_tests/deno-jsx
+      - run: env NAME=Deno deno test --coverage=coverage/raw/deno-runtime --allow-read --allow-env --allow-write --allow-net -c runtime-tests/deno/deno.json runtime-tests/deno
+      - run: deno test -c runtime-tests/deno-jsx/deno.precompile.json --coverage=coverage/raw/deno-precompile-jsx runtime-tests/deno-jsx
+      - run: deno test -c runtime-tests/deno-jsx/deno.react-jsx.json --coverage=coverage/raw/deno-react-jsx runtime-tests/deno-jsx
       - uses: actions/upload-artifact@v4
         with:
           name: coverage-deno
diff --git a/package.json b/package.json
index a253fd0e..cc7bf942 100644
--- a/package.json
+++ b/package.json
@@ -12,18 +12,18 @@
   "scripts": {
     "test": "tsc --noEmit && vitest --run && vitest -c .vitest.config/jsx-runtime-default.ts --run && vitest -c .vitest.config/jsx-runtime-dom.ts --run",
     "test:watch": "vitest --watch",
-    "test:deno": "deno test --allow-read --allow-env --allow-write --allow-net -c runtime_tests/deno/deno.json runtime_tests/deno && deno test --no-lock -c runtime_tests/deno-jsx/deno.precompile.json runtime_tests/deno-jsx && deno test --no-lock -c runtime_tests/deno-jsx/deno.react-jsx.json runtime_tests/deno-jsx",
-    "test:bun": "bun test --jsx-import-source ../../src/jsx runtime_tests/bun/index.test.tsx",
-    "test:fastly": "vitest --run --config ./runtime_tests/fastly/vitest.config.ts",
-    "test:node": "vitest --run --config ./runtime_tests/node/vitest.config.ts",
-    "test:workerd": "vitest --run --config ./runtime_tests/workerd/vitest.config.ts",
-    "test:lambda": "vitest --run --config ./runtime_tests/lambda/vitest.config.ts",
-    "test:lambda-edge": "vitest --run --config ./runtime_tests/lambda-edge/vitest.config.ts",
+    "test:deno": "deno test --allow-read --allow-env --allow-write --allow-net -c runtime-tests/deno/deno.json runtime-tests/deno && deno test --no-lock -c runtime-tests/deno-jsx/deno.precompile.json runtime-tests/deno-jsx && deno test --no-lock -c runtime-tests/deno-jsx/deno.react-jsx.json runtime-tests/deno-jsx",
+    "test:bun": "bun test --jsx-import-source ../../src/jsx runtime-tests/bun/index.test.tsx",
+    "test:fastly": "vitest --run --config ./runtime-tests/fastly/vitest.config.ts",
+    "test:node": "vitest --run --config ./runtime-tests/node/vitest.config.ts",
+    "test:workerd": "vitest --run --config ./runtime-tests/workerd/vitest.config.ts",
+    "test:lambda": "vitest --run --config ./runtime-tests/lambda/vitest.config.ts",
+    "test:lambda-edge": "vitest --run --config ./runtime-tests/lambda-edge/vitest.config.ts",
     "test:all": "bun run test && bun test:deno && bun test:bun && bun test:fastly && bun test:node && bun test:workerd && bun test:lambda && bun test:lambda-edge",
-    "lint": "eslint src runtime_tests",
-    "lint:fix": "eslint src runtime_tests --fix",
-    "format": "prettier --check --cache \"src/**/*.{js,ts,tsx}\" \"runtime_tests/**/*.{js,ts,tsx}\"",
-    "format:fix": "prettier --write --cache --cache-strategy metadata \"src/**/*.{js,ts,tsx}\" \"runtime_tests/**/*.{js,ts,tsx}\"",
+    "lint": "eslint src runtime-tests",
+    "lint:fix": "eslint src runtime-tests --fix",
+    "format": "prettier --check --cache \"src/**/*.{js,ts,tsx}\" \"runtime-tests/**/*.{js,ts,tsx}\"",
+    "format:fix": "prettier --write --cache --cache-strategy metadata \"src/**/*.{js,ts,tsx}\" \"runtime-tests/**/*.{js,ts,tsx}\"",
     "copy:package.cjs.json": "cp ./package.cjs.json ./dist/cjs/package.json && cp ./package.cjs.json ./dist/types/package.json ",
     "build": "bun run --shell bun remove-dist && bun ./build.ts && bun run copy:package.cjs.json",
     "postbuild": "publint",
@@ -647,4 +647,4 @@
   "engines": {
     "node": ">=16.9.0"
   }
-}
+}
\ No newline at end of file
diff --git a/runtime_tests/bun/.static/plain.txt b/runtime-tests/bun/.static/plain.txt
similarity index 100%
rename from runtime_tests/bun/.static/plain.txt
rename to runtime-tests/bun/.static/plain.txt
diff --git a/runtime_tests/bun/favicon.ico b/runtime-tests/bun/favicon.ico
similarity index 100%
rename from runtime_tests/bun/favicon.ico
rename to runtime-tests/bun/favicon.ico
diff --git a/runtime_tests/bun/index.test.tsx b/runtime-tests/bun/index.test.tsx
similarity index 98%
rename from runtime_tests/bun/index.test.tsx
rename to runtime-tests/bun/index.test.tsx
index a9d4bddb..8aaed909 100644
--- a/runtime_tests/bun/index.test.tsx
+++ b/runtime-tests/bun/index.test.tsx
@@ -83,10 +83,10 @@ describe('Basic Auth Middleware', () => {
 describe('Serve Static Middleware', () => {
   const app = new Hono()
   const onNotFound = vi.fn(() => {})
-  app.all('/favicon.ico', serveStatic({ path: './runtime_tests/bun/favicon.ico' }))
+  app.all('/favicon.ico', serveStatic({ path: './runtime-tests/bun/favicon.ico' }))
   app.all(
     '/favicon-notfound.ico',
-    serveStatic({ path: './runtime_tests/bun/favicon-notfound.ico', onNotFound })
+    serveStatic({ path: './runtime-tests/bun/favicon-notfound.ico', onNotFound })
   )
   app.use('/favicon-notfound.ico', async (c, next) => {
     await next()
@@ -95,14 +95,14 @@ describe('Serve Static Middleware', () => {
   app.get(
     '/static/*',
     serveStatic({
-      root: './runtime_tests/bun/',
+      root: './runtime-tests/bun/',
       onNotFound,
     })
   )
   app.get(
     '/dot-static/*',
     serveStatic({
-      root: './runtime_tests/bun/',
+      root: './runtime-tests/bun/',
       rewriteRequestPath: (path) => path.replace(/^\/dot-static/, './.static'),
     })
   )
@@ -121,7 +121,7 @@ describe('Serve Static Middleware', () => {
     expect(res.status).toBe(404)
     expect(res.headers.get('X-Custom')).toBe('Bun')
     expect(onNotFound).toHaveBeenCalledWith(
-      './runtime_tests/bun/favicon-notfound.ico',
+      './runtime-tests/bun/favicon-notfound.ico',
       expect.anything()
     )
   })
diff --git a/runtime_tests/bun/static/download b/runtime-tests/bun/static/download
similarity index 100%
rename from runtime_tests/bun/static/download
rename to runtime-tests/bun/static/download
diff --git a/runtime_tests/bun/static/hello.world/index.html b/runtime-tests/bun/static/hello.world/index.html
similarity index 100%
rename from runtime_tests/bun/static/hello.world/index.html
rename to runtime-tests/bun/static/hello.world/index.html
diff --git a/runtime_tests/bun/static/helloworld/index.html b/runtime-tests/bun/static/helloworld/index.html
similarity index 100%
rename from runtime_tests/bun/static/helloworld/index.html
rename to runtime-tests/bun/static/helloworld/index.html
diff --git a/runtime_tests/bun/static/plain.txt b/runtime-tests/bun/static/plain.txt
similarity index 100%
rename from runtime_tests/bun/static/plain.txt
rename to runtime-tests/bun/static/plain.txt
diff --git a/runtime_tests/bun/vitest.config.ts b/runtime-tests/bun/vitest.config.ts
similarity index 83%
rename from runtime_tests/bun/vitest.config.ts
rename to runtime-tests/bun/vitest.config.ts
index 6b1cae41..df1122b6 100644
--- a/runtime_tests/bun/vitest.config.ts
+++ b/runtime-tests/bun/vitest.config.ts
@@ -5,7 +5,7 @@ import config from '../../vitest.config'
 export default defineConfig({
   test: {
     globals: true,
-    include: ['**/runtime_tests/bun/**/*.+(ts|tsx|js)'],
+    include: ['**/runtime-tests/bun/**/*.+(ts|tsx|js)'],
     coverage: {
       ...config.test?.coverage,
       reportsDirectory: './coverage/raw/runtime-bun',
diff --git a/runtime_tests/deno-jsx/deno.precompile.json b/runtime-tests/deno-jsx/deno.precompile.json
similarity index 100%
rename from runtime_tests/deno-jsx/deno.precompile.json
rename to runtime-tests/deno-jsx/deno.precompile.json
diff --git a/runtime_tests/deno-jsx/deno.react-jsx.json b/runtime-tests/deno-jsx/deno.react-jsx.json
similarity index 100%
rename from runtime_tests/deno-jsx/deno.react-jsx.json
rename to runtime-tests/deno-jsx/deno.react-jsx.json
diff --git a/runtime_tests/deno-jsx/jsx.test.tsx b/runtime-tests/deno-jsx/jsx.test.tsx
similarity index 100%
rename from runtime_tests/deno-jsx/jsx.test.tsx
rename to runtime-tests/deno-jsx/jsx.test.tsx
diff --git a/runtime_tests/deno/.static/plain.txt b/runtime-tests/deno/.static/plain.txt
similarity index 100%
rename from runtime_tests/deno/.static/plain.txt
rename to runtime-tests/deno/.static/plain.txt
diff --git a/runtime_tests/deno/.vscode/settings.json b/runtime-tests/deno/.vscode/settings.json
similarity index 100%
rename from runtime_tests/deno/.vscode/settings.json
rename to runtime-tests/deno/.vscode/settings.json
diff --git a/runtime_tests/deno/deno.json b/runtime-tests/deno/deno.json
similarity index 100%
rename from runtime_tests/deno/deno.json
rename to runtime-tests/deno/deno.json
diff --git a/runtime_tests/deno/deno.lock b/runtime-tests/deno/deno.lock
similarity index 100%
rename from runtime_tests/deno/deno.lock
rename to runtime-tests/deno/deno.lock
diff --git a/runtime_tests/deno/favicon.ico b/runtime-tests/deno/favicon.ico
similarity index 100%
rename from runtime_tests/deno/favicon.ico
rename to runtime-tests/deno/favicon.ico
diff --git a/runtime_tests/deno/hono.test.ts b/runtime-tests/deno/hono.test.ts
similarity index 100%
rename from runtime_tests/deno/hono.test.ts
rename to runtime-tests/deno/hono.test.ts
diff --git a/runtime_tests/deno/middleware.test.tsx b/runtime-tests/deno/middleware.test.tsx
similarity index 96%
rename from runtime_tests/deno/middleware.test.tsx
rename to runtime-tests/deno/middleware.test.tsx
index ad992fe9..ed55dc80 100644
--- a/runtime_tests/deno/middleware.test.tsx
+++ b/runtime-tests/deno/middleware.test.tsx
@@ -68,10 +68,10 @@ Deno.test('JSX middleware', async () => {
 Deno.test('Serve Static middleware', async () => {
   const app = new Hono()
   const onNotFound = spy(() => {})
-  app.all('/favicon.ico', serveStatic({ path: './runtime_tests/deno/favicon.ico' }))
+  app.all('/favicon.ico', serveStatic({ path: './runtime-tests/deno/favicon.ico' }))
   app.all(
     '/favicon-notfound.ico',
-    serveStatic({ path: './runtime_tests/deno/favicon-notfound.ico', onNotFound })
+    serveStatic({ path: './runtime-tests/deno/favicon-notfound.ico', onNotFound })
   )
   app.use('/favicon-notfound.ico', async (c, next) => {
     await next()
@@ -81,7 +81,7 @@ Deno.test('Serve Static middleware', async () => {
   app.get(
     '/static/*',
     serveStatic({
-      root: './runtime_tests/deno',
+      root: './runtime-tests/deno',
       onNotFound,
     })
   )
@@ -89,7 +89,7 @@ Deno.test('Serve Static middleware', async () => {
   app.get(
     '/dot-static/*',
     serveStatic({
-      root: './runtime_tests/deno',
+      root: './runtime-tests/deno',
       rewriteRequestPath: (path) => path.replace(/^\/dot-static/, './.static'),
     })
   )
diff --git a/runtime_tests/deno/ssg.test.tsx b/runtime-tests/deno/ssg.test.tsx
similarity index 100%
rename from runtime_tests/deno/ssg.test.tsx
rename to runtime-tests/deno/ssg.test.tsx
diff --git a/runtime_tests/deno/static/download b/runtime-tests/deno/static/download
similarity index 100%
rename from runtime_tests/deno/static/download
rename to runtime-tests/deno/static/download
diff --git a/runtime_tests/deno/static/hello.world/index.html b/runtime-tests/deno/static/hello.world/index.html
similarity index 100%
rename from runtime_tests/deno/static/hello.world/index.html
rename to runtime-tests/deno/static/hello.world/index.html
diff --git a/runtime_tests/deno/static/helloworld/index.html b/runtime-tests/deno/static/helloworld/index.html
similarity index 100%
rename from runtime_tests/deno/static/helloworld/index.html
rename to runtime-tests/deno/static/helloworld/index.html
diff --git a/runtime_tests/deno/static/plain.txt b/runtime-tests/deno/static/plain.txt
similarity index 100%
rename from runtime_tests/deno/static/plain.txt
rename to runtime-tests/deno/static/plain.txt
diff --git a/runtime_tests/deno/stream.test.ts b/runtime-tests/deno/stream.test.ts
similarity index 100%
rename from runtime_tests/deno/stream.test.ts
rename to runtime-tests/deno/stream.test.ts
diff --git a/runtime_tests/fastly/index.test.ts b/runtime-tests/fastly/index.test.ts
similarity index 100%
rename from runtime_tests/fastly/index.test.ts
rename to runtime-tests/fastly/index.test.ts
diff --git a/runtime_tests/fastly/vitest.config.ts b/runtime-tests/fastly/vitest.config.ts
similarity index 76%
rename from runtime_tests/fastly/vitest.config.ts
rename to runtime-tests/fastly/vitest.config.ts
index c0480b13..d01a1a00 100644
--- a/runtime_tests/fastly/vitest.config.ts
+++ b/runtime-tests/fastly/vitest.config.ts
@@ -7,8 +7,8 @@ export default defineConfig({
   plugins: [fastlyCompute()],
   test: {
     globals: true,
-    include: ['**/runtime_tests/fastly/**/(*.)+(test).+(ts|tsx)'],
-    exclude: ['**/runtime_tests/fastly/vitest.config.ts'],
+    include: ['**/runtime-tests/fastly/**/(*.)+(test).+(ts|tsx)'],
+    exclude: ['**/runtime-tests/fastly/vitest.config.ts'],
     coverage: {
       ...config.test?.coverage,
       reportsDirectory: './coverage/raw/runtime-fastly',
diff --git a/runtime_tests/lambda-edge/index.test.ts b/runtime-tests/lambda-edge/index.test.ts
similarity index 100%
rename from runtime_tests/lambda-edge/index.test.ts
rename to runtime-tests/lambda-edge/index.test.ts
diff --git a/runtime_tests/lambda-edge/vitest.config.ts b/runtime-tests/lambda-edge/vitest.config.ts
similarity index 72%
rename from runtime_tests/lambda-edge/vitest.config.ts
rename to runtime-tests/lambda-edge/vitest.config.ts
index 105ac950..5fd8bc9f 100644
--- a/runtime_tests/lambda-edge/vitest.config.ts
+++ b/runtime-tests/lambda-edge/vitest.config.ts
@@ -8,8 +8,8 @@ export default defineConfig({
       NAME: 'Node',
     },
     globals: true,
-    include: ['**/runtime_tests/lambda-edge/**/*.+(ts|tsx|js)'],
-    exclude: ['**/runtime_tests/lambda-edge/vitest.config.ts'],
+    include: ['**/runtime-tests/lambda-edge/**/*.+(ts|tsx|js)'],
+    exclude: ['**/runtime-tests/lambda-edge/vitest.config.ts'],
     coverage: {
       ...config.test?.coverage,
       reportsDirectory: './coverage/raw/runtime-lambda-edge',
diff --git a/runtime_tests/lambda/index.test.ts b/runtime-tests/lambda/index.test.ts
similarity index 100%
rename from runtime_tests/lambda/index.test.ts
rename to runtime-tests/lambda/index.test.ts
diff --git a/runtime_tests/lambda/mock.ts b/runtime-tests/lambda/mock.ts
similarity index 100%
rename from runtime_tests/lambda/mock.ts
rename to runtime-tests/lambda/mock.ts
diff --git a/runtime_tests/lambda/stream-mock.ts b/runtime-tests/lambda/stream-mock.ts
similarity index 100%
rename from runtime_tests/lambda/stream-mock.ts
rename to runtime-tests/lambda/stream-mock.ts
diff --git a/runtime_tests/lambda/stream.test.ts b/runtime-tests/lambda/stream.test.ts
similarity index 100%
rename from runtime_tests/lambda/stream.test.ts
rename to runtime-tests/lambda/stream.test.ts
diff --git a/runtime_tests/lambda/vitest.config.ts b/runtime-tests/lambda/vitest.config.ts
similarity index 64%
rename from runtime_tests/lambda/vitest.config.ts
rename to runtime-tests/lambda/vitest.config.ts
index 01caae52..8cee5a8e 100644
--- a/runtime_tests/lambda/vitest.config.ts
+++ b/runtime-tests/lambda/vitest.config.ts
@@ -8,11 +8,11 @@ export default defineConfig({
       NAME: 'Node',
     },
     globals: true,
-    include: ['**/runtime_tests/lambda/**/*.+(ts|tsx|js)'],
+    include: ['**/runtime-tests/lambda/**/*.+(ts|tsx|js)'],
     exclude: [
-      '**/runtime_tests/lambda/vitest.config.ts',
-      '**/runtime_tests/lambda/mock.ts',
-      '**/runtime_tests/lambda/stream-mock.ts',
+      '**/runtime-tests/lambda/vitest.config.ts',
+      '**/runtime-tests/lambda/mock.ts',
+      '**/runtime-tests/lambda/stream-mock.ts',
     ],
     coverage: {
       ...config.test?.coverage,
diff --git a/runtime_tests/node/index.test.ts b/runtime-tests/node/index.test.ts
similarity index 100%
rename from runtime_tests/node/index.test.ts
rename to runtime-tests/node/index.test.ts
diff --git a/runtime_tests/node/vitest.config.ts b/runtime-tests/node/vitest.config.ts
similarity index 74%
rename from runtime_tests/node/vitest.config.ts
rename to runtime-tests/node/vitest.config.ts
index 5387c11f..4cb6deed 100644
--- a/runtime_tests/node/vitest.config.ts
+++ b/runtime-tests/node/vitest.config.ts
@@ -8,8 +8,8 @@ export default defineConfig({
       NAME: 'Node',
     },
     globals: true,
-    include: ['**/runtime_tests/node/**/*.+(ts|tsx|js)'],
-    exclude: ['**/runtime_tests/node/vitest.config.ts'],
+    include: ['**/runtime-tests/node/**/*.+(ts|tsx|js)'],
+    exclude: ['**/runtime-tests/node/vitest.config.ts'],
     coverage: {
       ...config.test?.coverage,
       reportsDirectory: './coverage/raw/runtime-node',
diff --git a/runtime_tests/tsconfig.json b/runtime-tests/tsconfig.json
similarity index 100%
rename from runtime_tests/tsconfig.json
rename to runtime-tests/tsconfig.json
diff --git a/runtime_tests/workerd/index.test.ts b/runtime-tests/workerd/index.test.ts
similarity index 93%
rename from runtime_tests/workerd/index.test.ts
rename to runtime-tests/workerd/index.test.ts
index 8a28daa9..2173ce6a 100644
--- a/runtime_tests/workerd/index.test.ts
+++ b/runtime-tests/workerd/index.test.ts
@@ -6,7 +6,7 @@ describe('workerd', () => {
   let worker: UnstableDevWorker
 
   beforeAll(async () => {
-    worker = await unstable_dev('./runtime_tests/workerd/index.ts', {
+    worker = await unstable_dev('./runtime-tests/workerd/index.ts', {
       vars: {
         NAME: 'Hono',
       },
@@ -35,7 +35,7 @@ describe('workerd with WebSocket', () => {
   // worker.fetch does not support WebSocket:
   // https://github.com/cloudflare/workers-sdk/issues/4573#issuecomment-1850420973
   it('Should handle the WebSocket connection correctly', async () => {
-    const worker = await unstable_dev('./runtime_tests/workerd/index.ts', {
+    const worker = await unstable_dev('./runtime-tests/workerd/index.ts', {
       experimental: { disableExperimentalWarning: true },
     })
     const ws = new WebSocket(`ws://${worker.address}:${worker.port}/ws`)
diff --git a/runtime_tests/workerd/index.ts b/runtime-tests/workerd/index.ts
similarity index 100%
rename from runtime_tests/workerd/index.ts
rename to runtime-tests/workerd/index.ts
diff --git a/runtime_tests/workerd/vitest.config.ts b/runtime-tests/workerd/vitest.config.ts
similarity index 71%
rename from runtime_tests/workerd/vitest.config.ts
rename to runtime-tests/workerd/vitest.config.ts
index 43410a1b..c82861be 100644
--- a/runtime_tests/workerd/vitest.config.ts
+++ b/runtime-tests/workerd/vitest.config.ts
@@ -5,8 +5,8 @@ import config from '../../vitest.config'
 export default defineConfig({
   test: {
     globals: true,
-    include: ['**/runtime_tests/workerd/**/(*.)+(test).+(ts|tsx)'],
-    exclude: ['**/runtime_tests/workerd/vitest.config.ts'],
+    include: ['**/runtime-tests/workerd/**/(*.)+(test).+(ts|tsx)'],
+    exclude: ['**/runtime-tests/workerd/vitest.config.ts'],
     coverage: {
       ...config.test?.coverage,
       reportsDirectory: './coverage/raw/runtime-workerd',
diff --git a/vitest.config.ts b/vitest.config.ts
index 26ce5de6..8c968fde 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -19,7 +19,7 @@ export default defineConfig({
       exclude: [
         ...(configDefaults.coverage.exclude ?? []),
         'benchmarks',
-        'runtime_tests',
+        'runtime-tests',
         'build.ts',
         'src/test-utils',