diff --git a/jest.config.js b/jest.config.js
index 21c7f32f..e3070358 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,6 +1,7 @@
 module.exports = {
   preset: 'ts-jest',
   testEnvironment: 'node',
+  setupFilesAfterEnv: ['./jest.setup.ts'],
   collectCoverageFrom: [
     'src/*.{js,jsx}',
     '!**/node_modules/**',
diff --git a/jest.setup.ts b/jest.setup.ts
new file mode 100644
index 00000000..e32a924a
--- /dev/null
+++ b/jest.setup.ts
@@ -0,0 +1 @@
+jest.setTimeout(20e3);
diff --git a/src/__tests__/index.test.js b/src/__tests__/index.test.js
index 46ba69db..c6a628db 100644
--- a/src/__tests__/index.test.js
+++ b/src/__tests__/index.test.js
@@ -143,12 +143,12 @@ describe('PendingXHR', () => {
       setTimeout(() => {
         request1Resolver([200, 'first xhr finished']);
       });
-      await sleep(10);
+      await sleep(1000);
       expect(pendingXHR.pendingXhrCount()).toEqual(1);
       setTimeout(() => {
         request2Resolver([200, 'second xhr finished']);
       });
-      await sleep(10);
+      await sleep(1000);
       expect(pendingXHR.pendingXhrCount()).toEqual(0);
     });
   });