diff --git a/code/main course/Lesson29/BarbershopHQ/Gemfile.lock b/code/main course/Lesson29/BarbershopHQ/Gemfile.lock
index 265b58b..3274121 100644
--- a/code/main course/Lesson29/BarbershopHQ/Gemfile.lock	
+++ b/code/main course/Lesson29/BarbershopHQ/Gemfile.lock	
@@ -29,7 +29,7 @@ GEM
     minitest (5.11.3)
     multi_json (1.13.1)
     mustermann (1.0.3)
-    rack (2.0.6)
+    rack (2.2.3)
     rack-protection (2.0.5)
       rack
     rack-test (0.6.3)