diff --git a/package.json b/package.json
index d8df32a..7ee57f5 100644
--- a/package.json
+++ b/package.json
@@ -106,6 +106,7 @@
     "webcodecs"
   ],
   "prettier": {
-    "singleQuote": true
+    "singleQuote": true,
+    "trailingComma": "all"
   }
 }