diff --git a/Gemfile.lock b/Gemfile.lock
index 878aefb..9faf249 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -59,7 +59,7 @@ GEM
     mustermann (1.0.2)
     os (1.0.1)
     public_suffix (4.0.6)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rack-protection (2.0.3)
       rack
     rack-test (1.1.0)