diff --git a/package.json b/package.json
index e2562bc3e..4ad882420 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "build:types": "concurrently \"tsc -p ./packages/mermaid/tsconfig.json --emitDeclarationOnly\" \"tsc -p ./packages/mermaid-mindmap/tsconfig.json --emitDeclarationOnly\"",
     "build:watch": "pnpm build:vite --watch",
     "build": "pnpm run -r clean && concurrently \"pnpm build:vite\" \"pnpm build:types\"",
-    "dev": "concurrently \"pnpm build:vite --watch\" \"ts-node-esm .vite/server\"",
+    "dev": "concurrently \"pnpm build:vite --watch\" \"ts-node-esm .vite/server.ts\"",
     "docs:build": "ts-node-esm --transpileOnly packages/mermaid/src/docs.mts",
     "docs:verify": "pnpm docs:build --verify",
     "todo-postbuild": "documentation build src/mermaidAPI.ts src/config.ts src/defaultConfig.ts --shallow -f md --markdown-toc false > src/docs/Setup.md && prettier --write src/docs/Setup.md",