diff --git a/testing/taskcluster/tasks/tests/fx_linux64_mochitest_jetpack.yml b/testing/taskcluster/tasks/tests/fx_linux64_mochitest_jetpack.yml
index 964b5c305210..7fc90f9594b9 100644
--- a/testing/taskcluster/tasks/tests/fx_linux64_mochitest_jetpack.yml
+++ b/testing/taskcluster/tasks/tests/fx_linux64_mochitest_jetpack.yml
@@ -7,6 +7,7 @@ task:
     name: '[TC] Linux64 mochitest-jetpack'
     description: Mochitest jetpack run
   payload:
+    maxRunTime: 5400
     capabilities:
       devices:
         loopbackVideo: true