diff --git a/Gemfile.lock b/Gemfile.lock
index 99b68b8..ab9e5b1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,7 +107,7 @@ GEM
     puma (3.5.2)
     quiet_assets (1.0.3)
       railties (>= 3.1, < 5.0)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.6)