diff --git a/Gemfile b/Gemfile
index 34de72f..d865b07 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,6 +12,7 @@ gem 'i18n'
 gem 'will_paginate', '~> 3.0.0'
 gem 'mingo'
 gem 'activemodel'
+gem 'mongo', '~> 1.12.0'
 gem 'mongo_ext'
 gem 'bson_ext'
 gem 'faraday_middleware'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3d0b214..0f4cc20 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,9 +8,9 @@ GEM
     activesupport (3.0.5)
     atomic (1.0.1)
     avl_tree (1.1.3)
-    bson (1.6.2)
-    bson_ext (1.6.2)
-      bson (~> 1.6.2)
+    bson (1.12.3)
+    bson_ext (1.12.3)
+      bson (~> 1.12.3)
     builder (2.1.2)
     choices (0.2.4)
       hashie (>= 0.4.0)
@@ -35,8 +35,8 @@ GEM
       metriks (~> 0.9.9)
     mingo (0.4.3)
       mongo (>= 1.3)
-    mongo (1.6.2)
-      bson (~> 1.6.2)
+    mongo (1.12.3)
+      bson (= 1.12.3)
     mongo_ext (0.19.3)
     multipart-post (1.1.5)
     never-forget (0.1.1)
@@ -78,6 +78,7 @@ DEPENDENCIES
   i18n
   metriks-middleware
   mingo
+  mongo (~> 1.12.0)
   mongo_ext
   never-forget
   rack-cache