diff --git a/Gemfile.lock b/Gemfile.lock
index 3112a04..19c1dff 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9.7)
     multipart-post (2.0.0)
-    rack (1.6.4)
+    rack (1.6.12)
     rack-protection (1.5.3)
       rack
     rb-fsevent (0.9.7)