diff --git a/Gemfile.lock b/Gemfile.lock
index 9a7a436..e511d0e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,7 @@ GEM
     multi_json (1.14.1)
     multi_xml (0.6.0)
     mustermann (1.0.3)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-protection (2.0.7)
       rack
     sinatra (2.0.7)