diff --git a/Gemfile.lock b/Gemfile.lock
index 4bd8e55..0158377 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -73,7 +73,7 @@ GEM
       oauth2 (~> 0.8.0)
       omniauth (~> 1.0)
     polyglot (0.3.3)
-    rack (1.4.1)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-ssl (1.3.2)