diff --git a/Gemfile.lock b/Gemfile.lock
index 2d6ad42..f972bf7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -137,7 +137,7 @@ GEM
       pry (~> 0.9.9)
     pry-rails (0.1.6)
       pry
-    rack (1.4.1)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-openid (1.3.1)