diff --git a/packages/bun-types/test.d.ts b/packages/bun-types/test.d.ts
index 38a6b3928b74..4431091393e4 100644
--- a/packages/bun-types/test.d.ts
+++ b/packages/bun-types/test.d.ts
@@ -92,7 +92,7 @@ declare module "bun:test" {
     function clearAllMocks(): void;
     function resetAllMocks(): void;
     function fn<T extends (...args: any[]) => any>(func?: T): Mock<T>;
-    function setSystemTime(now?: number | Date): void;
+    function setSystemTime(now?: number | Date): typeof jest;
     function setTimeout(milliseconds: number): void;
     function useFakeTimers(options?: { now?: number | Date }): typeof vi;
     function useRealTimers(): typeof vi;
diff --git a/test/integration/bun-types/fixture/mocks.ts b/test/integration/bun-types/fixture/mocks.ts
index 599dee26feae..2940d82e96c7 100644
--- a/test/integration/bun-types/fixture/mocks.ts
+++ b/test/integration/bun-types/fixture/mocks.ts
@@ -29,3 +29,5 @@ jest.fn<() => string>().mockResolvedValue("24");
 jest.fn().mockClear();
 jest.fn().mockReset();
 jest.fn().mockRejectedValueOnce(new Error());
+
+expectType(jest.setSystemTime()).is<typeof jest>();