diff --git a/Gemfile b/Gemfile
index 2aa798e25..bd91d857c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -139,7 +139,6 @@ gem 'rest-client'
 gem 'rinku'
 gem 'sanitize'
 gem 'sass'
-gem 'es6_module_transpiler-rails'
 gem 'sidekiq'
 
 gem 'sinatra', require: nil
diff --git a/Gemfile.lock b/Gemfile.lock
index 29951eb96..08d82bb18 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -84,8 +84,6 @@ GEM
     ember-source (1.6.0.beta.2)
       handlebars-source (~> 1.0)
     erubis (2.7.0)
-    es6_module_transpiler-rails (0.4.0)
-      execjs
     eventmachine (1.0.3)
     excon (0.28.0)
     execjs (2.0.2)
@@ -406,7 +404,6 @@ DEPENDENCIES
   email_reply_parser-discourse
   ember-rails
   ember-source (= 1.6.0.beta.2)
-  es6_module_transpiler-rails
   eventmachine
   fabrication
   fakeweb (~> 1.3.0)