diff --git a/.github/workflows/nodejs-lib-cluster.yml b/.github/workflows/nodejs-lib-cluster1.yml
similarity index 64%
rename from .github/workflows/nodejs-lib-cluster.yml
rename to .github/workflows/nodejs-lib-cluster1.yml
index 0b7c542078..0f79275019 100644
--- a/.github/workflows/nodejs-lib-cluster.yml
+++ b/.github/workflows/nodejs-lib-cluster1.yml
@@ -1,4 +1,4 @@
-name: CI lib/cluster
+name: CI lib/cluster1
 
 on:
   push:
@@ -11,8 +11,8 @@ jobs:
     name: Node.js
     uses: node-modules/github-actions/.github/workflows/node-test.yml@master
     with:
-      os: 'ubuntu-latest, macos-latest, windows-latest'
-      version: '18.19.0, 18, 20, 22'
-      test: 'npm run ci:lib/cluster'
+      os: 'ubuntu-latest, windows-latest'
+      version: '18, 20, 22'
+      test: 'npm run ci:lib/cluster1'
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/nodejs-lib-cluster2.yml b/.github/workflows/nodejs-lib-cluster2.yml
new file mode 100644
index 0000000000..5ceda285b8
--- /dev/null
+++ b/.github/workflows/nodejs-lib-cluster2.yml
@@ -0,0 +1,18 @@
+name: CI lib/cluster2
+
+on:
+  push:
+    branches: [ master, next ]
+  pull_request:
+    branches: [ master, next ]
+
+jobs:
+  Job:
+    name: Node.js
+    uses: node-modules/github-actions/.github/workflows/node-test.yml@master
+    with:
+      os: 'ubuntu-latest, windows-latest'
+      version: '18, 20, 22'
+      test: 'npm run ci:lib/cluster2'
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/nodejs-lib-core.yml b/.github/workflows/nodejs-lib-core.yml
index 64885255d2..e419f6c80b 100644
--- a/.github/workflows/nodejs-lib-core.yml
+++ b/.github/workflows/nodejs-lib-core.yml
@@ -11,8 +11,8 @@ jobs:
     name: Node.js
     uses: node-modules/github-actions/.github/workflows/node-test.yml@master
     with:
-      os: 'ubuntu-latest, macos-latest, windows-latest'
-      version: '18.19.0, 18, 20, 22'
+      os: 'ubuntu-latest, windows-latest'
+      version: '18, 20, 22'
       test: 'npm run ci:lib/core'
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/nodejs-lib-other.yml b/.github/workflows/nodejs-lib-other.yml
index e6d94c54d2..e176cd7e40 100644
--- a/.github/workflows/nodejs-lib-other.yml
+++ b/.github/workflows/nodejs-lib-other.yml
@@ -11,8 +11,8 @@ jobs:
     name: Node.js
     uses: node-modules/github-actions/.github/workflows/node-test.yml@master
     with:
-      os: 'ubuntu-latest, macos-latest, windows-latest'
-      version: '18.19.0, 18, 20, 22'
+      os: 'ubuntu-latest, windows-latest'
+      version: '18, 20, 22'
       test: 'npm run ci:lib/other'
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/nodejs-lib-plugins.yml b/.github/workflows/nodejs-lib-plugins.yml
index b1603cae5d..3eb32b4b68 100644
--- a/.github/workflows/nodejs-lib-plugins.yml
+++ b/.github/workflows/nodejs-lib-plugins.yml
@@ -11,8 +11,8 @@ jobs:
     name: Node.js
     uses: node-modules/github-actions/.github/workflows/node-test.yml@master
     with:
-      os: 'ubuntu-latest, macos-latest, windows-latest'
-      version: '18.19.0, 18, 20, 22'
+      os: 'ubuntu-latest, windows-latest'
+      version: '18, 20, 22'
       test: 'npm run ci:lib/plugins'
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/nodejs-other.yml b/.github/workflows/nodejs-other.yml
index 845f6e8e94..7b71ff1079 100644
--- a/.github/workflows/nodejs-other.yml
+++ b/.github/workflows/nodejs-other.yml
@@ -11,8 +11,8 @@ jobs:
     name: Node.js
     uses: node-modules/github-actions/.github/workflows/node-test.yml@master
     with:
-      os: 'ubuntu-latest, macos-latest, windows-latest'
-      version: '18.19.0, 18, 20, 22'
+      os: 'ubuntu-latest, windows-latest'
+      version: '18, 20, 22'
       test: 'npm run ci:lib/other'
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/package.json b/package.json
index da9f24dc3e..8121e8abaa 100644
--- a/package.json
+++ b/package.json
@@ -99,7 +99,8 @@
     "postci": "npm run prepublishOnly && npm run clean",
     "prepublishOnly": "tshy && tshy-after && attw --pack --profile node16",
     "ci:app": "npm run ci \"test/app/**/*.test.ts\"",
-    "ci:lib/cluster": "npm run ci \"test/lib/cluster/**/*.test.ts\"",
+    "ci:lib/cluster1": "npm run ci \"test/lib/cluster1/**/*.test.ts\"",
+    "ci:lib/cluster2": "npm run ci \"test/lib/cluster2/**/*.test.ts\"",
     "ci:lib/core": "npm run ci \"test/lib/core/**/*.test.ts\"",
     "ci:lib/plugins": "npm run ci \"test/lib/plugins/**/*.test.ts\"",
     "ci:lib/other": "npm run ci \"test/lib/*.test.ts\"",
diff --git a/test/lib/cluster/app_worker.test.ts b/test/lib/cluster1/app_worker.test.ts
similarity index 98%
rename from test/lib/cluster/app_worker.test.ts
rename to test/lib/cluster1/app_worker.test.ts
index 2ed12bb857..389e05447b 100644
--- a/test/lib/cluster/app_worker.test.ts
+++ b/test/lib/cluster1/app_worker.test.ts
@@ -13,7 +13,7 @@ const DEFAULT_BAD_REQUEST_HTML = `<html>
   </body>
   </html>`;
 
-describe('test/lib/cluster/app_worker.test.ts', () => {
+describe('test/lib/cluster1/app_worker.test.ts', () => {
   let app: MockApplication;
   before(() => {
     app = cluster('apps/app-server');
diff --git a/test/lib/cluster/cluster-client-error.test.ts b/test/lib/cluster1/cluster-client-error.test.ts
similarity index 92%
rename from test/lib/cluster/cluster-client-error.test.ts
rename to test/lib/cluster1/cluster-client-error.test.ts
index 0ad2f5f2b9..d784d25666 100644
--- a/test/lib/cluster/cluster-client-error.test.ts
+++ b/test/lib/cluster1/cluster-client-error.test.ts
@@ -3,7 +3,7 @@ import { strict as assert } from 'node:assert';
 import { scheduler } from 'node:timers/promises';
 import { MockApplication, createApp, getFilepath } from '../../utils.js';
 
-describe('test/lib/cluster/cluster-client-error.test.ts', () => {
+describe('test/lib/cluster1/cluster-client-error.test.ts', () => {
   let app: MockApplication;
   before(async () => {
     app = createApp('apps/cluster-client-error');
diff --git a/test/lib/cluster/cluster-client.test.ts b/test/lib/cluster1/cluster-client.test.ts
similarity index 97%
rename from test/lib/cluster/cluster-client.test.ts
rename to test/lib/cluster1/cluster-client.test.ts
index eb9f81d284..754b27e53f 100644
--- a/test/lib/cluster/cluster-client.test.ts
+++ b/test/lib/cluster1/cluster-client.test.ts
@@ -4,7 +4,7 @@ import { MockApplication, createApp, singleProcessApp } from '../../utils.js';
 
 const innerClient = Symbol.for('ClusterClient#innerClient');
 
-describe('test/lib/cluster/cluster-client.test.ts', () => {
+describe('test/lib/cluster1/cluster-client.test.ts', () => {
   let app: MockApplication;
   describe('common mode', () => {
     before(async () => {
diff --git a/test/lib/cluster/master.test.ts b/test/lib/cluster2/master.test.ts
similarity index 99%
rename from test/lib/cluster/master.test.ts
rename to test/lib/cluster2/master.test.ts
index fa9b142330..533153281b 100644
--- a/test/lib/cluster/master.test.ts
+++ b/test/lib/cluster2/master.test.ts
@@ -3,7 +3,7 @@ import { mm } from '@eggjs/mock';
 import coffee, { Coffee } from 'coffee';
 import { MockApplication, cluster, getFilepath } from '../../utils.js';
 
-describe('test/lib/cluster/master.test.ts', () => {
+describe('test/lib/cluster2/master.test.ts', () => {
   afterEach(mm.restore);
 
   describe('app worker die', () => {