diff --git a/package.json b/package.json
index 5be5344a..3a6ed538 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "stop": "fis3 server stop",
     "dev": "fis3 release -cwd ./public",
     "publish2npm": "sh publish.sh && npm publish",
-    "prettier": "prettier --write src/**/*.tsx"
+    "prettier": "prettier --write 'src/**/*.{tsx,ts}'"
   },
   "repository": {
     "type": "git",