diff --git a/.gitignore b/.gitignore
index b6252d227c..f0ba6879de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,6 +17,7 @@ wp-tests-config.php
 /tests/phpunit/build
 /wp-cli.local.yml
 /jsdoc
+/vendor
 
 # Files and folders that get created in wp-content
 /src/wp-content/blogs.dir