diff --git a/Gemfile.lock b/Gemfile.lock
index 99f6cf0..efb023d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.4.4)
-    rack (2.2.6.4)
+    rack (2.2.8.1)
     rake (13.0.3)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)