diff --git a/Gemfile b/Gemfile
index a04bace71..c95ab538e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ gem 'active_model_serializers', git: 'https://github.com/rails-api/active_model_
 # PR that makes it all hang together welcome
 gem 'ember-rails'
 gem 'ember-source', '1.0.0.rc6.2'
-gem 'handlebars-source'
+gem 'handlebars-source', '1.0.12'
 gem 'barber'
 
 gem 'vestal_versions', git: 'https://github.com/zhangyuan/vestal_versions'
diff --git a/Gemfile.lock b/Gemfile.lock
index b7f39dcb7..172a70bbb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -493,7 +493,7 @@ DEPENDENCIES
   fog
   guard-rspec
   guard-spork
-  handlebars-source
+  handlebars-source (= 1.0.12)
   highline
   hiredis
   image_optim