diff --git a/Gemfile b/Gemfile
index 67debb826..1319f3494 100644
--- a/Gemfile
+++ b/Gemfile
@@ -148,7 +148,7 @@ group :test do
   gem 'fixture_builder', '0.3.4'
   gem 'fuubar', '1.1.0'
   gem 'rspec-instafail', '0.2.4', :require => false
-  gem 'selenium-webdriver', '>= 2.27.0.rc'
+  gem 'selenium-webdriver', '2.27.0'
 
   gem 'webmock', '1.8.11', :require => false
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 0d8348baf..2b727a537 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -367,7 +367,7 @@ GEM
       railties (~> 3.2.0)
       sass (>= 3.1.10)
       tilt (~> 1.3)
-    selenium-webdriver (2.27.0.rc1)
+    selenium-webdriver (2.27.0)
       childprocess (>= 0.2.5)
       libwebsocket (~> 0.1.3)
       multi_json (~> 1.0)
@@ -489,7 +489,7 @@ DEPENDENCIES
   rspec-rails (= 2.11.4)
   ruby-oembed (= 0.8.7)
   sass-rails (= 3.2.5)
-  selenium-webdriver (>= 2.27.0.rc)
+  selenium-webdriver (= 2.27.0)
   spork (= 1.0.0rc3)
   timecop (= 0.5.3)
   twitter (= 4.2.0)
diff --git a/script/ci/before_install.sh b/script/ci/before_install.sh
index 6b0fae571..c5236b071 100755
--- a/script/ci/before_install.sh
+++ b/script/ci/before_install.sh
@@ -4,6 +4,3 @@
 envdir="$(readlink -e $(dirname $0))/../env"
 . "$envdir/ruby_env"
 . "$envdir/ensure_right_rubygems"
-
-# install selenium prerelease
-gem install selenium-webdriver --pre