diff --git a/test/Gemfile.lock b/test/Gemfile.lock
index ab3c480..b4923f2 100644
--- a/test/Gemfile.lock
+++ b/test/Gemfile.lock
@@ -19,7 +19,7 @@ GEM
     minitest (5.11.3)
     mustermann (1.0.3)
     mysql2 (0.4.10)
-    rack (2.0.6)
+    rack (2.2.3)
     rack-protection (2.0.5)
       rack
     rake (12.3.0)