diff --git a/Gemfile.lock b/Gemfile.lock
index 5a10b6f..e054e48 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -51,7 +51,7 @@ GEM
     json_pure (1.5.1)
     mime-types (1.16)
     nokogiri (1.4.4)
-    rack (1.2.2)
+    rack (1.2.8)
     rack-mount (0.6.13)
       rack (>= 1.0.0)
     rack-test (0.5.7)