diff --git a/Ruby.gitignore b/Ruby.gitignore
index f2c13607..28f48498 100644
--- a/Ruby.gitignore
+++ b/Ruby.gitignore
@@ -22,6 +22,7 @@ build/
 
 ## Environment normalisation:
 /.bundle/
+/vendor/bundle
 /lib/bundler/man/
 
 # for a library or gem, you might want to ignore these files since the code is