diff --git a/Gemfile b/Gemfile
index 2ac6a1402f..5443439fff 100644
--- a/Gemfile
+++ b/Gemfile
@@ -46,7 +46,7 @@ gem 'active_model_serializers', '~> 0.8.3'
 gem 'onebox'
 
 gem 'ember-rails'
-gem 'ember-source', '1.12.2'
+gem 'ember-source', '1.12.1'
 gem 'barber'
 gem 'babel-transpiler'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 673f9a3b95..120c0a64d5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
       ember-source (>= 1.1.0)
       jquery-rails (>= 1.0.17)
       railties (>= 3.1)
-    ember-source (1.12.2)
+    ember-source (1.12.1)
     erubis (2.7.0)
     eventmachine (1.0.8)
     excon (0.45.4)
@@ -412,7 +412,7 @@ DEPENDENCIES
   discourse-qunit-rails
   discourse_email_parser
   ember-rails
-  ember-source (= 1.12.2)
+  ember-source (= 1.12.1)
   excon
   fabrication (= 2.9.8)
   fakeweb (~> 1.3.0)