diff --git a/example.gitignore b/example.gitignore
index d1e35ac003194adfbce3ae11e6afe71dea48a070..c292c2e927dc912c76fc41ab59a26a43ceba32fa 100644
--- a/example.gitignore
+++ b/example.gitignore
@@ -37,3 +37,7 @@ sites/simpletest
 
 # Ignore SimpleTest multi-site environment.
 # simpletest
+
+# Ignore core phpcs.xml and phpunit.xml.
+core/phpcs.xml
+core/phpunit.xml