Hey there! We've found the following might help you get unblocked faster:

• 🧵 Railway ignore node version value

• 🧵 TypeScript Module Resolution Issues - Cannot Find Controller Files in Build Environment

If you find the answer from one of these, please let us know by solving the thread!

Are you using Nixpacks? If so, try switching to Railpack and see if this engine error still happens.

Hey there!

I think somewhere in your package.json there is a line which looks something like:

  "engines": {
    "node": ">=18.00.0"
  },

Your package.json is imported in Railpack and will override the default v22. You have a package that will only work with node v20 or higher. So you need to find the engine in your package.json and edit that line. After that run npm install to update your package-lock.json and deploy again. This should fix the issue.

Thx all,
but my package.json doesn't contain something like
"engines": { "node": ">=18.00.0" },
I use Railpack
I have deleted node-modules and did npm install and the problem persists

Hey, that error basically means that one of your packages does not support Node v18 and needs v20 and above. To fix that, specify the following lines at the root of your package.json:

  "engines": {
    "node": ">=20.0.0"
  },

After that, Railpack will detect the correct version and the error should go away.

Also, I would recommend using the LTS version (it's the latest and most supported one) if your project supports it. If any issues appears, revert back to the one above.

"engines": {
    "node": "24.11.1"
},

Let me know if you hit any issues while changing those versions!

I hit the same issue.
I installed the NODE TLS 24.11.1, commited and pushed to GITHUB, than redeployed. Nothing new...
rc, prisma

141ms

npm ci

1s

npm warn config production Use --omit=dev instead.

npm error code EBADENGINE

npm error engine Unsupported engine

npm error engine Not compatible with your version of node/npm: @react-router/dev@7.9.4

npm error notsup Not compatible with your version of node/npm: @react-router/dev@7.9.4

npm error notsup Required: {"node":">=20.0.0"}

npm error notsup Actual: {"npm":"10.8.2","node":"v18.20.8"}

npm error A complete log of this run can be found in: /root/.npm/_logs/2025-11-23T16_07_55_469Z-debug-0.log

copy /mise/shims, /mise/installs

485ms

ERROR: failed to build: failed to solve: process "npm ci" did not complete successfully: exit code: 1

It still seems that Railpack is forcing the use of NodeJS v18. Is your repository public? If not, can you share your entire package.json file, including the build logs?

My repo is public:
https://github.com/itzik-lesher/flexible-product-discounts
Thx

Any idea?

Hey, thanks for the repository link, I managed to do a PR that fixes all the issues that I encountered while deploying (https://github.com/itzik-lesher/flexible-product-discounts/pull/1).

1. I've removed the .node-version file (Railpack can detect the verrsion by using the engines property)

2. Added Remix vite plugin to vite.config.js

3. Used the correct package on route.js

If you encounter any other issues please let us know!

Thx Mr. Passos,
I'm really new to this stuff so forgive me if I ask stupid questions...
Did you mean in the answer that you deployed it yourself or do I have still to deploy?
Do I have to change the repo accord to what you did?
What do I have to do now in order to use the app publicly?
Thx

You would need to merge the pull request in your repository (as passos has linked).

Your Railway service should automatically redeploy assuming the repository is linked.