diff --git a/Gemfile.lock b/Gemfile.lock
index 49175c45..dc1f3008 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -114,7 +114,7 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.10)
     public_suffix (4.0.1)
-    rack (1.6.11)
+    rack (1.6.13)
     rack-accept (0.4.5)
       rack (>= 0.4)
     rack-test (1.1.0)