diff --git a/Gemfile b/Gemfile
index 0a2caed56..5015accf1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,10 +15,6 @@ gem 'sprockets-rails'
 gem 'sassc-rails'
 # Use Puma as the app server
 gem 'puma', '~> 5.0'
-# Use Uglifier as compressor for JavaScript assets
-gem 'uglifier', '>= 2.7.2'
-# See https://github.com/sstephenson/execjs#readme for more supported runtimes
-# gem 'therubyracer', platforms: :ruby
 
 # Use jquery as the JavaScript library
 gem 'jquery-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index 06790851c..e62682e98 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -746,8 +746,6 @@ GEM
     tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
     uber (0.1.0)
-    uglifier (4.2.0)
-      execjs (>= 0.3.0, < 3)
     underscore-rails (1.8.3)
     unf (0.1.4)
       unf_ext
@@ -867,7 +865,6 @@ DEPENDENCIES
   turnout
   twitter-typeahead-rails (= 0.11.1.pre.corejavascript)
   tzinfo-data
-  uglifier (>= 2.7.2)
   web-console (>= 4.1.0)
   webdrivers
   webmock