diff --git a/code/main course/Lesson22/sinatra-bootstrap-clean/Gemfile.lock b/code/main course/Lesson22/sinatra-bootstrap-clean/Gemfile.lock
index 95e9323..d3e4d47 100644
--- a/code/main course/Lesson22/sinatra-bootstrap-clean/Gemfile.lock	
+++ b/code/main course/Lesson22/sinatra-bootstrap-clean/Gemfile.lock	
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    rack (1.5.2)
+    rack (1.6.13)
     rack-protection (1.5.1)
       rack
     sinatra (1.4.4)