diff --git a/Gemfile.lock b/Gemfile.lock
index acacfff..d9bffab 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -152,7 +152,7 @@ GEM
       method_source (~> 0.9.0)
     public_suffix (3.0.2)
     puma (3.11.4)
-    rack (2.0.4)
+    rack (2.2.3)
     rack-cors (1.0.2)
     rack-pjax (1.0.0)
       nokogiri (~> 1.5)