diff --git a/README.md b/README.md
index c9ee42ad..4263d6e5 100644
--- a/README.md
+++ b/README.md
@@ -261,7 +261,7 @@ mongo --eval "db.publisher.find({name: 'Lulu'})"
 
 Output:
 
-```json hl_lines="5"
+```js hl_lines="5"
 connecting to: mongodb://127.0.0.1:27017
 {
   "_id": ObjectId("5f67b331514d6855bc5c54cb"),