diff --git a/toolkit/components/antitracking/test/browser/browser_blockingCookies.js b/toolkit/components/antitracking/test/browser/browser_blockingCookies.js
index 3fdc9d0edcdc..2031f10422f4 100644
--- a/toolkit/components/antitracking/test/browser/browser_blockingCookies.js
+++ b/toolkit/components/antitracking/test/browser/browser_blockingCookies.js
@@ -1,6 +1,6 @@
 /* import-globals-from antitracking_head.js */
 
-requestLongerTimeout(2);
+requestLongerTimeout(4);
 
 AntiTracking.runTestInNormalAndPrivateMode(
   "Set/Get Cookies",