diff --git a/Gemfile b/Gemfile
index 30b8d469d7..7e0fb0fc01 100644
--- a/Gemfile
+++ b/Gemfile
@@ -40,7 +40,7 @@ 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 48b704161d..74bf1e6b0f 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 (1.0.7)
     excon (0.45.3)
@@ -406,7 +406,7 @@ DEPENDENCIES
   discourse-qunit-rails
   email_reply_parser
   ember-rails
-  ember-source (= 1.12.2)
+  ember-source (= 1.12.1)
   excon
   fabrication (= 2.9.8)
   fakeweb (~> 1.3.0)