diff --git a/Gemfile.lock b/Gemfile.lock
index 03c4b8f..24fa5e4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,7 +40,8 @@ GEM
     arel (3.0.2)
     bcrypt-ruby (3.0.1)
     bson (1.6.0)
-    bson_ext (1.4.1)
+    bson_ext (1.6.0)
+      bson (= 1.6.0)
     builder (3.0.0)
     chunky_png (1.2.5)
     coffee-rails (3.2.2)