diff --git a/packages/web-worker/src/runner.ts b/packages/web-worker/src/runner.ts
index 49d00ade6e47..86abe720b923 100644
--- a/packages/web-worker/src/runner.ts
+++ b/packages/web-worker/src/runner.ts
@@ -3,7 +3,10 @@ import { VitestExecutor } from 'vitest/execute'
 
 export class InlineWorkerRunner extends VitestExecutor {
   constructor(options: ExecuteOptions, private context: any) {
+    // share the same mocker as main executor
+    const mocker = (globalThis as any).__vitest_mocker__
     super(options)
+    this.mocker = (globalThis as any).__vitest_mocker__ = mocker
   }
 
   prepareContext(context: Record<string, any>) {