diff --git a/Gemfile.lock b/Gemfile.lock
index f3650b8..dd12f20 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -224,7 +224,7 @@ GEM
     public_suffix (3.0.2)
     puma (4.2.1)
       nio4r (~> 2.0)
-    rack (1.6.11)
+    rack (1.6.13)
     rack-cors (1.0.2)
     rack-test (0.6.3)
       rack (>= 1.0)