diff --git a/Gemfile.lock b/Gemfile.lock
index dfc88ae..1ba7d29 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,7 +43,7 @@ GEM
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     public_suffix (3.0.3)
-    rack (2.0.6)
+    rack (2.2.3)
     rack-protection (2.0.4)
       rack
     rack-test (1.1.0)