diff --git a/script/ci/before_install.sh b/script/ci/before_install.sh
index 34d5e6f73..d02ec75f1 100755
--- a/script/ci/before_install.sh
+++ b/script/ci/before_install.sh
@@ -6,7 +6,7 @@ envdir="$(readlink -e $(dirname $0))/../env"
 . "$envdir/ensure_right_rubygems"
 
 if [ "$BUILD_TYPE" = "cucumber" ]; then
-  curl http://security.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_16.0.2+build1-0ubuntu0.12.04.1_i386.deb > firefox.deb
+  curl http://security.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_16.0.2+build1-0ubuntu0.11.04.1_i386.deb > firefox.deb
   sudo apt-get install libnotify4
   sudo dpkg -i firefox.deb
 fi