diff --git a/Gemfile.lock b/Gemfile.lock
index f389ddc..9c7a796 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -92,7 +92,7 @@ GEM
       activesupport (>= 3.1)
     parallel (1.17.0)
     public_suffix (3.0.3)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-livereload (0.3.17)
       rack
     rake (12.3.2)