diff --git a/Gemfile b/Gemfile
index 79abde1c7..aa69a189e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -137,6 +137,10 @@ gem 'omniauth-twitter',  '1.0.1'
 gem 'twitter',           '4.8.1'
 gem 'omniauth-wordpress','0.2.1'
 
+# Serializers
+
+gem 'active_model_serializers', '0.9.3'
+
 # XMPP chat dependencies
 gem 'diaspora-vines',             '~> 0.1.27'
 gem 'rails-assets-diaspora_jsxc', '~> 0.0.12'
@@ -172,9 +176,6 @@ gem 'zip-zip'
 # https://github.com/discourse/discourse/pull/238
 gem 'minitest'
 
-# Serializers
-gem 'active_model_serializers'
-
 # Windows and OSX have an execjs compatible runtime built-in, Linux users should
 # install Node.js or use 'therubyracer'.
 #
diff --git a/Gemfile.lock b/Gemfile.lock
index 9e27def2d..05d660d90 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,9 +26,8 @@ GEM
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.1)
-    active_model_serializers (0.9.0)
+    active_model_serializers (0.9.3)
       activemodel (>= 3.2)
-      builder (~> 3.1)
     activejob (4.2.0)
       activesupport (= 4.2.0)
       globalid (>= 0.3.0)
@@ -347,7 +346,7 @@ GEM
     mime-types (2.4.3)
     mini_magick (4.0.1)
     mini_portile (0.6.1)
-    minitest (5.5.0)
+    minitest (5.5.1)
     mobile-fu (1.3.1)
       rack-mobile-detect
       rails
@@ -649,7 +648,7 @@ PLATFORMS
 DEPENDENCIES
   actionpack-action_caching
   actionpack-page_caching
-  active_model_serializers
+  active_model_serializers (= 0.9.3)
   activerecord-import (= 0.7.0)
   acts-as-taggable-on (= 3.4.2)
   acts_as_api (= 0.4.2)