diff --git a/Gemfile.lock b/Gemfile.lock
index 168d39e..75dcd27 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
     parallel (1.21.0)
     parslet (2.0.0)
     public_suffix (4.0.6)
-    rack (2.2.6.2)
+    rack (2.2.6.4)
     rack-livereload (0.3.17)
       rack
     rb-fsevent (0.11.1)