diff --git a/Gemfile.lock b/Gemfile.lock
index 38c4662..0cfccb6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,7 +4,7 @@ GEM
     diff-lcs (1.3)
     json (2.2.0)
     mustermann (1.0.3)
-    rack (2.0.8)
+    rack (2.2.3)
     rack-protection (2.0.5)
       rack
     rack-test (1.1.0)