diff --git a/Gemfile.lock b/Gemfile.lock
index 7fc359e..3179678 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -79,7 +79,7 @@ GEM
       stringio
     public_suffix (5.0.0)
     racc (1.8.1)
-    rack (2.2.4)
+    rack (2.2.8.1)
     rack-livereload (0.3.17)
       rack
     rainpress (1.0.1)