diff --git a/.eslintrc.json b/.eslintrc.json
index c503063..8dd1b46 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,6 +1,7 @@
 {
 	"root": true,
 	"extends": [
+		"wikimedia/client-es5",
 		"wikimedia/mediawiki"
 	],
 	"globals": {