diff --git a/Gemfile.lock b/Gemfile.lock
index fe6ad7a6..a1b248a8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -208,7 +208,7 @@ GEM
     public_suffix (2.0.5)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.5)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.1)