diff --git a/Gemfile.lock b/Gemfile.lock
index 8d6f86b..e9410b7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,7 +75,7 @@ GEM
       method_source (~> 1.0)
     public_suffix (6.0.2)
     racc (1.8.1)
-    rack (3.1.14)
+    rack (3.1.18)
     rake (13.2.1)
     rexml (3.4.1)
     rspec (3.13.0)