diff --git a/package.json b/package.json
index bf2be8600e10186307fb306fb98f204d91296861..7e888ff63bf05de3f5b7d79aa29264b5831550ed 100644
--- a/package.json
+++ b/package.json
@@ -34,8 +34,8 @@
     "prepare:re2": "node tools/check-re2.mjs",
     "prestart": "run-s generate:* ",
     "pretest": "run-s generate:* ",
-    "prettier": "prettier --check \"**/*.{ts,js,mjs,json,md}\"",
-    "prettier-fix": "prettier --write \"**/*.{ts,js,mjs,json,md}\"",
+    "prettier": "prettier --check \"**/*.{ts,js,mjs,json,md,yml}\"",
+    "prettier-fix": "prettier --write \"**/*.{ts,js,mjs,json,md,yml}\"",
     "release": "node tools/release.mjs",
     "start": "node -r ts-node/register/transpile-only -- lib/renovate.ts",
     "test": "run-s lint test-schema type-check jest",