diff --git a/Gemfile.lock b/Gemfile.lock
index 95fbf9a..a8dae45 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
       cocaine (>= 0.0.2)
       mime-types
     polyglot (0.3.3)
-    rack (1.2.5)
+    rack (1.2.8)
     rack-mount (0.6.14)
       rack (>= 1.0.0)
     rack-test (0.5.7)