diff --git a/Gemfile.lock b/Gemfile.lock
index e44864f..1b9c09e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,7 +110,7 @@ GEM
     pony (1.11)
       mail (>= 2.0)
     public_suffix (1.5.1)
-    rack (1.6.4)
+    rack (1.6.12)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)