diff --git a/tools/tinderbox-configs/monitoring/XULRunner_mozilla1.8.txt b/tools/tinderbox-configs/monitoring/XULRunner_mozilla1.8.txt
index bdc54d44e1d6..5dea015e1f05 100644
--- a/tools/tinderbox-configs/monitoring/XULRunner_mozilla1.8.txt
+++ b/tools/tinderbox-configs/monitoring/XULRunner_mozilla1.8.txt
@@ -1 +1 @@
-/pub/mozilla.org/xulrunner/nightly/latest-mozilla1.8/xulrunner-1.8.1.3pre.en-US.linux-i686.tar.gz
+/pub/mozilla.org/xulrunner/nightly/latest-mozilla1.8/xulrunner-1.8.1.4pre.en-US.linux-i686.tar.gz