diff --git a/Gemfile b/Gemfile
index 9458fcd..6e04ac8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ gem 'rails', '4.0.13'
 gem 'sqlite3'
 gem 'sass'
 gem 'sass-rails', '~> 5.0'
-gem 'uglifier', '2.5.0'
+gem 'uglifier', '2.7.2'
 gem 'coffee-rails', '4.0.1'
 gem 'jquery-rails', '3.1.0'
 # gem 'turbolinks', '2.2.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index 77241ae..c79c4bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -79,7 +79,7 @@ GEM
     docile (1.1.5)
     erubis (2.7.0)
     eventmachine (1.0.7)
-    execjs (2.5.2)
+    execjs (2.8.1)
     factory_girl (4.5.0)
       activesupport (>= 3.0.0)
     factory_girl_rails (4.5.0)
@@ -97,7 +97,7 @@ GEM
     jquery-rails (3.1.0)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.2)
+    json (1.8.6)
     launchy (2.4.3)
       addressable (~> 2.3)
     mail (2.6.3)
@@ -186,7 +186,7 @@ GEM
       ansi
       minitest (~> 4)
     tzinfo (0.3.44)
-    uglifier (2.5.0)
+    uglifier (2.7.2)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
     validates_timeliness (3.0.14)
@@ -233,7 +233,7 @@ DEPENDENCIES
   thin (= 1.6.3)
   time_date_helpers (= 0.0.2)
   turn (= 0.9.7)
-  uglifier (= 2.5.0)
+  uglifier (= 2.7.2)
   validates_timeliness (= 3.0.14)
   will_paginate (= 3.0.7)
   wirble (= 0.1.3)