diff --git a/script/ci/before_install.sh b/script/ci/before_install.sh
index 9d8b4b0b9..6b0fae571 100755
--- a/script/ci/before_install.sh
+++ b/script/ci/before_install.sh
@@ -1,10 +1,9 @@
 #!/bin/sh
-# install selenium prerelease
-gem install selenium-webdriver --pre
-gem list
 
 # Ensure known RubyGems version
 envdir="$(readlink -e $(dirname $0))/../env"
 . "$envdir/ruby_env"
 . "$envdir/ensure_right_rubygems"
 
+# install selenium prerelease
+gem install selenium-webdriver --pre