diff --git a/Gemfile.lock b/Gemfile.lock
index 691b5de..d765186 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -71,7 +71,7 @@ GEM
     parser (2.2.2.6)
       ast (>= 1.1, < 3.0)
     powerpack (0.1.1)
-    rack (1.6.4)
+    rack (1.6.11)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.6)