diff --git a/Gemfile.lock b/Gemfile.lock
index ef1c139..7674184 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,7 +36,7 @@ GEM
       erubis
       mingo (>= 0.2)
       rack
-    rack (1.4.1)
+    rack (1.4.5)
     rack-protection (1.2.0)
       rack
     rake (0.9.2)