diff --git a/Gemfile.lock b/Gemfile.lock
index a74c81e..cf7abbb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -115,7 +115,7 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     public_suffix (2.0.5)
-    rack (2.0.1)
+    rack (2.2.6.4)
     rack-livereload (0.3.16)
       rack
     rake (12.0.0)