diff --git a/Gemfile.lock b/Gemfile.lock
index 964723c..1473ca4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -220,7 +220,7 @@ GEM
     rabl (0.6.5)
       activesupport (>= 2.3.14)
       multi_json (~> 1.0)
-    rack (1.4.1)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-ssl (1.3.2)