diff --git a/code/main course/Lesson29/BarbershopHQ/Gemfile.lock b/code/main course/Lesson29/BarbershopHQ/Gemfile.lock
index 265b58b..6be390b 100644
--- a/code/main course/Lesson29/BarbershopHQ/Gemfile.lock	
+++ b/code/main course/Lesson29/BarbershopHQ/Gemfile.lock	
@@ -64,7 +64,7 @@ GEM
       ripl-multi_line (>= 0.2.4)
       ripl-rack (>= 0.2.0)
       sinatra (>= 1.2.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
 
 PLATFORMS