diff --git a/Gemfile.lock b/Gemfile.lock
index 4b44e821b..14c85df6d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,7 +36,7 @@ GEM
     multi_json (1.13.1)
     multi_test (0.1.2)
     mustermann (1.0.3)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-protection (2.0.5)
       rack
     rake (12.3.3)