diff --git a/Chapter02/recipe-6/address_splitter/Gemfile.lock b/Chapter02/recipe-6/address_splitter/Gemfile.lock
index d55dcd0..289e410 100644
--- a/Chapter02/recipe-6/address_splitter/Gemfile.lock
+++ b/Chapter02/recipe-6/address_splitter/Gemfile.lock
@@ -204,7 +204,7 @@ GEM
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.8.1)
-    rack (3.1.11)
+    rack (3.1.14)
     rack-session (2.1.0)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)