diff --git a/Gemfile.lock b/Gemfile.lock
index e6f7b56..21b740c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
     erubis (2.6.6)
       abstract (>= 1.0.0)
     i18n (0.5.0)
-    rack (1.2.3)
+    rack (1.2.8)
     rack-mount (0.6.14)
       rack (>= 1.0.0)
     rack-test (0.5.7)