diff --git a/Gemfile.lock b/Gemfile.lock
index da46d79..5168fe6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,7 +112,7 @@ GEM
       omniauth (~> 1.0)
     polyglot (0.3.3)
     psych (1.3.4)
-    rack (1.4.1)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-ssl (1.3.2)