diff --git a/Gemfile.lock b/Gemfile.lock
index 6f76974..292d5a2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -123,7 +123,7 @@ GEM
       pry (>= 0.9.10, < 0.11.0)
     pry-rails (0.3.4)
       pry (>= 0.9.10)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.1)