diff --git a/Gemfile.lock b/Gemfile.lock
index a73a001..1e87c81 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,7 +21,7 @@ GEM
     multi_json (1.3.6)
     purdytest (1.0.0)
       minitest (~> 2.2)
-    rack (1.3.5)
+    rack (1.5.2)
     rack-protection (1.1.4)
       rack
     rack-test (0.6.1)