diff --git a/Gemfile b/Gemfile
index 25b04d3e5..0143707e4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -83,7 +83,7 @@ gem 'time_diff'
 gem 'sass-rails', '~> 4.0.1'
 gem 'coffee-rails', '~> 4.0.1'
 gem 'compass-rails', '~> 1.1.6'
-gem 'uglifier', '~> 2.4'
+gem 'uglifier', '~> 2.5'
 gem 'therubyracer', '~> 0.12.1', platforms: [:mri, :rbx]
 gem 'therubyrhino', '~> 1.73.1', platforms: :jruby
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 323825d32..b7fe9b6ff 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -494,7 +494,7 @@ GEM
       polyglot
       polyglot (>= 0.3.1)
     tzinfo (0.3.39)
-    uglifier (2.4.0)
+    uglifier (2.5.0)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
     underscore-rails (1.6.0)
@@ -610,7 +610,7 @@ DEPENDENCIES
   therubyrhino (~> 1.73.1)
   time_diff
   timecop
-  uglifier (~> 2.4)
+  uglifier (~> 2.5)
   underscore-rails
   whenever (~> 0.9.0)
   wikicloth