diff --git a/Gemfile b/Gemfile
index b93bdd706b15fc6552555ceaa3e782d6c05575f2..05c312c88e30914879b71dee6b7d9c15fee6e946 100644
--- a/Gemfile
+++ b/Gemfile
@@ -42,7 +42,7 @@ gem 'sidetiq', '0.6.3'
 
 # Compression
 
-gem 'uglifier', '2.5.3'
+gem 'uglifier', '2.7.1'
 
 # Configuration
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 43e476f51c1fcaef750dc57718eeec728c41c9b2..51c3655d96d30dad4965295a69aa7b2e41ab5ab3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -648,7 +648,7 @@ GEM
       ethon (>= 0.7.1)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uglifier (2.5.3)
+    uglifier (2.7.1)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
     unf (0.1.4)
@@ -787,7 +787,7 @@ DEPENDENCIES
   twitter (= 4.8.1)
   twitter-text (= 1.11.0)
   typhoeus (= 0.7.1)
-  uglifier (= 2.5.3)
+  uglifier (= 2.7.1)
   unicorn (= 4.8.3)
   uuid (= 2.3.7)
   webmock (= 1.20.4)