diff --git a/integration-tests/vitest.config.ts b/integration-tests/vitest.config.ts
index 1214554240c..204ea4a0adf 100644
--- a/integration-tests/vitest.config.ts
+++ b/integration-tests/vitest.config.ts
@@ -27,10 +27,11 @@ export default defineConfig({
     ],
     retry: 2,
     fileParallelism: true,
+    pool: 'forks',
     poolOptions: {
-      threads: {
-        minThreads: 2,
-        maxThreads: 4,
+      forks: {
+        minForks: 2,
+        maxForks: 4,
       },
     },
   },
diff --git a/package.json b/package.json
index da9dbffc545..cdfc14b2d66 100644
--- a/package.json
+++ b/package.json
@@ -53,9 +53,9 @@
     "test:integration:sandbox:none": "cross-env QWEN_SANDBOX=false vitest run --root ./integration-tests",
     "test:integration:sandbox:docker": "cross-env QWEN_SANDBOX=docker npm run build:sandbox && QWEN_SANDBOX=docker vitest run --root ./integration-tests",
     "test:integration:sandbox:podman": "cross-env QWEN_SANDBOX=podman vitest run --root ./integration-tests",
-    "test:integration:no-ak:sandbox:none": "cross-env QWEN_SANDBOX=false vitest run --root ./integration-tests --maxWorkers 2 ./fake-openai-server.test.ts ./cli/daemon-invocation-context.test.ts ./cli/list_directory.test.ts ./cli/qwen-serve-routes.test.ts ./cli/qwen-serve-streaming.test.ts ./sdk-typescript/abort-and-lifecycle.test.ts ./sdk-typescript/permission-control.test.ts ./sdk-typescript/sdk-mcp-server.test.ts ./sdk-typescript/subagents.test.ts ./sdk-typescript/system-control.test.ts ./sdk-typescript/tool-control.test.ts",
-    "test:integration:sdk:sandbox:none": "cross-env QWEN_SANDBOX=false vitest run --root ./integration-tests --poolOptions.threads.maxThreads 2 sdk-typescript",
-    "test:integration:sdk:sandbox:docker": "cross-env QWEN_SANDBOX=docker npm run build:sandbox && QWEN_SANDBOX=docker vitest run --root ./integration-tests --poolOptions.threads.maxThreads 2 sdk-typescript",
+    "test:integration:no-ak:sandbox:none": "cross-env QWEN_SANDBOX=false vitest run --root ./integration-tests --poolOptions.forks.maxForks 2 ./fake-openai-server.test.ts ./cli/daemon-invocation-context.test.ts ./cli/list_directory.test.ts ./cli/qwen-serve-routes.test.ts ./cli/qwen-serve-streaming.test.ts ./sdk-typescript/abort-and-lifecycle.test.ts ./sdk-typescript/permission-control.test.ts ./sdk-typescript/sdk-mcp-server.test.ts ./sdk-typescript/subagents.test.ts ./sdk-typescript/system-control.test.ts ./sdk-typescript/tool-control.test.ts",
+    "test:integration:sdk:sandbox:none": "cross-env QWEN_SANDBOX=false vitest run --root ./integration-tests --poolOptions.forks.maxForks 2 sdk-typescript",
+    "test:integration:sdk:sandbox:docker": "cross-env QWEN_SANDBOX=docker npm run build:sandbox && QWEN_SANDBOX=docker vitest run --root ./integration-tests --poolOptions.forks.maxForks 2 sdk-typescript",
     "test:sdk:python": "python3 -m pytest -c packages/sdk-python/pyproject.toml packages/sdk-python/tests -q",
     "test:integration:cli:sandbox:none": "cross-env QWEN_SANDBOX=false vitest run --root ./integration-tests cli",
     "test:integration:cli:sandbox:docker": "cross-env QWEN_SANDBOX=docker npm run build:sandbox && QWEN_SANDBOX=docker vitest run --root ./integration-tests cli",
diff --git a/scripts/tests/integration-vitest-config.test.ts b/scripts/tests/integration-vitest-config.test.ts
new file mode 100644
index 00000000000..5310fad9a7e
--- /dev/null
+++ b/scripts/tests/integration-vitest-config.test.ts
@@ -0,0 +1,19 @@
+/**
+ * @license
+ * Copyright 2026 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, expect, it } from 'vitest';
+import integrationConfig from '../../integration-tests/vitest.config.js';
+
+describe('integration Vitest config', () => {
+  it('limits the forks pool used by integration tests', () => {
+    expect(integrationConfig.test?.pool).toBe('forks');
+    expect(integrationConfig.test?.poolOptions?.forks).toEqual({
+      minForks: 2,
+      maxForks: 4,
+    });
+    expect(integrationConfig.test?.poolOptions?.threads).toBeUndefined();
+  });
+});
diff --git a/scripts/tests/no-ak-integration-ci.test.js b/scripts/tests/no-ak-integration-ci.test.js
index 8f244e7bd38..fda3d425933 100644
--- a/scripts/tests/no-ak-integration-ci.test.js
+++ b/scripts/tests/no-ak-integration-ci.test.js
@@ -26,7 +26,7 @@ describe('no-AK integration CI wiring', () => {
 
     expect(packageJson.scripts[NO_AK_SCRIPT]).toBe(
       [
-        'cross-env QWEN_SANDBOX=false vitest run --root ./integration-tests --maxWorkers 2',
+        'cross-env QWEN_SANDBOX=false vitest run --root ./integration-tests --poolOptions.forks.maxForks 2',
         './fake-openai-server.test.ts',
         './cli/daemon-invocation-context.test.ts',
         './cli/list_directory.test.ts',
diff --git a/scripts/tests/package-scripts.test.js b/scripts/tests/package-scripts.test.js
index eef5d4f9a28..d27bca3b0af 100644
--- a/scripts/tests/package-scripts.test.js
+++ b/scripts/tests/package-scripts.test.js
@@ -42,6 +42,17 @@ describe('package scripts', () => {
     );
   });
 
+  it('limits SDK integration tests through the forks pool', () => {
+    const packageJson = readPackageJson();
+
+    expect(packageJson.scripts['test:integration:sdk:sandbox:none']).toContain(
+      '--poolOptions.forks.maxForks 2',
+    );
+    expect(
+      packageJson.scripts['test:integration:sdk:sandbox:docker'],
+    ).toContain('--poolOptions.forks.maxForks 2');
+  });
+
   it('cleans package build artifacts before checking the serve fast path bundle', () => {
     const packageJson = readPackageJson();