diff --git a/Gemfile.lock b/Gemfile.lock
index 08150c8..1ff340d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
     multi_json (1.3.6)
     multi_xml (0.5.1)
     polyglot (0.3.3)
-    rack (1.4.1)
+    rack (1.6.12)
     rack-protection (1.2.0)
       rack
     rest-client (1.6.7)