diff --git a/extensions/voice-call/src/manager/events.test.ts b/extensions/voice-call/src/manager/events.test.ts
index f979fb1d92e..46cbe744d18 100644
--- a/extensions/voice-call/src/manager/events.test.ts
+++ b/extensions/voice-call/src/manager/events.test.ts
@@ -1,17 +1,32 @@
 import fs from "node:fs";
 import os from "node:os";
 import path from "node:path";
-import { describe, expect, it } from "vitest";
+import { afterEach, describe, expect, it } from "vitest";
 import { VoiceCallConfigSchema } from "../config.js";
 import type { VoiceCallProvider } from "../providers/base.js";
 import type { HangupCallInput, NormalizedEvent } from "../types.js";
 import type { CallManagerContext } from "./context.js";
 import { processEvent } from "./events.js";
 
+const contexts: CallManagerContext[] = [];
+
+afterEach(() => {
+  for (const ctx of contexts.splice(0)) {
+    for (const timer of ctx.maxDurationTimers.values()) {
+      clearTimeout(timer);
+    }
+    ctx.maxDurationTimers.clear();
+    for (const waiter of ctx.transcriptWaiters.values()) {
+      clearTimeout(waiter.timeout);
+    }
+    ctx.transcriptWaiters.clear();
+    fs.rmSync(ctx.storePath, { recursive: true, force: true });
+  }
+});
+
 function createContext(overrides: Partial<CallManagerContext> = {}): CallManagerContext {
-  const storePath = path.join(os.tmpdir(), `openclaw-voice-call-events-test-${Date.now()}`);
-  fs.mkdirSync(storePath, { recursive: true });
-  return {
+  const storePath = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-voice-call-events-test-"));
+  const ctx: CallManagerContext = {
     activeCalls: new Map(),
     providerCallIdMap: new Map(),
     processedEventIds: new Set(),
@@ -30,6 +45,8 @@ function createContext(overrides: Partial<CallManagerContext> = {}): CallManager
     initialMessageInFlight: new Set(),
     ...overrides,
   };
+  contexts.push(ctx);
+  return ctx;
 }
 
 function createProvider(overrides: Partial<VoiceCallProvider> = {}): VoiceCallProvider {