diff --git a/Gemfile.lock b/Gemfile.lock
index cdc1afc..0e7fa0e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -137,8 +137,6 @@ GEM
       connection_pool (~> 1.2)
       optionable (~> 0.2.0)
     multi_json (1.9.2)
-    ngmin-rails (0.4.0)
-      rails (>= 3.1)
     nio4r (1.0.0)
     nokogiri (1.6.1)
       mini_portile (~> 0.5.0)
@@ -276,7 +274,6 @@ DEPENDENCIES
   mongoid
   mongoid-pagination
   mongoid-rspec
-  ngmin-rails
   nokogiri
   pry-nav
   pry-rails