diff --git a/packages/vitest/src/runtime/workers/base.ts b/packages/vitest/src/runtime/workers/base.ts
index 1682383f9b16..964cca9ab761 100644
--- a/packages/vitest/src/runtime/workers/base.ts
+++ b/packages/vitest/src/runtime/workers/base.ts
@@ -7,6 +7,7 @@ import { provideWorkerState } from '../utils'
 let _viteNode: VitestExecutor
 
 const moduleCache = new ModuleCacheMap()
+const moduleExecutionInfo = new Map()
 
 async function startViteNode(options: ContextExecutorOptions) {
   if (_viteNode) {
@@ -21,6 +22,7 @@ export async function runBaseTests(method: 'run' | 'collect', state: WorkerGloba
   const { ctx } = state
   // state has new context, but we want to reuse existing ones
   state.moduleCache = moduleCache
+  state.moduleExecutionInfo = moduleExecutionInfo
 
   provideWorkerState(globalThis, state)
 
diff --git a/test/coverage-test/test/isolation.test.ts b/test/coverage-test/test/isolation.test.ts
index 0757051a202b..2d464d4b51aa 100644
--- a/test/coverage-test/test/isolation.test.ts
+++ b/test/coverage-test/test/isolation.test.ts
@@ -48,9 +48,8 @@ for (const isolate of [true, false]) {
       if (isV8Provider()) {
         expect(summary).toStrictEqual({
           '<process-cwd>/fixtures/src/branch.ts': {
-            // FIXME: this should specify exact numbers
-            branches: expect.any(String),
-            functions: expect.any(String),
+            branches: '3/3 (100%)',
+            functions: '1/1 (100%)',
             lines: '6/6 (100%)',
             statements: '6/6 (100%)',
           },