diff --git a/Gemfile.lock b/Gemfile.lock
index b3b6d2c..7b81957 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,7 +83,7 @@ GEM
       activesupport (>= 3.1)
     parallel (1.17.0)
     public_suffix (3.1.0)
-    rack (2.0.7)
+    rack (2.2.6.4)
     rack-livereload (0.3.17)
       rack
     rake (13.0.1)