diff --git a/Gemfile.lock b/Gemfile.lock
index ca3955f..6156fb2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -127,7 +127,7 @@ GEM
     paranoia (2.4.1)
       activerecord (>= 4.0, < 5.3)
     public_suffix (3.0.3)
-    rack (1.6.11)
+    rack (1.6.13)
     rack-accept (0.4.5)
       rack (>= 0.4)
     rack-test (0.6.3)