diff --git a/biome.json b/biome.json
index 9da3b4db061c..8effd9cfceb8 100644
--- a/biome.json
+++ b/biome.json
@@ -29,7 +29,7 @@
   "linter": { "enabled": false },
   "javascript": {
     "formatter": {
-      "trailingCommas": "es5",
+      "trailingCommas": "all",
       "quoteStyle": "single",
       "semicolons": "always"
     }
diff --git a/prettier.config.js b/prettier.config.js
index 4c9969429196..e93fdfce7910 100644
--- a/prettier.config.js
+++ b/prettier.config.js
@@ -4,7 +4,7 @@ export default {
 	semi: true,
 	singleQuote: true,
 	tabWidth: 2,
-	trailingComma: 'es5',
+	trailingComma: 'all',
 	useTabs: true,
 	plugins: ['prettier-plugin-astro'],
 	overrides: [