diff --git a/Gemfile.lock b/Gemfile.lock
index f5a42aa..5c76e75 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,7 +19,7 @@ GEM
     ice_cube (0.16.3)
     minitest (5.14.1)
     mustermann (1.0.3)
-    rack (2.0.8)
+    rack (2.2.3)
     rack-protection (2.0.7)
       rack
     rack-test (1.1.0)