Renovate "Dependency lookup failure" in CI

Renovate queries a datasource to find versions for each dependency. A "Dependency lookup failure" means that query failed: the datasource is wrong, the package lives on a private feed with no credentials, or the registry was unreachable.

What this error means

A Renovate PR or log shows "Failed to look up dependency <name>" or a "Dependency lookup failure" warning, and that package is skipped or shown with no available versions.

WARN: Failed to look up npm package @vendor/sdk
  Dependency lookup failure
  statusCode: 404

Common causes

A private package with no registry access

Renovate looks the package up on the public registry and gets 404 because it is hosted on a private feed it has no hostRules for.

A wrong or missing datasource/registryUrls

The package uses a custom datasource or registry that is not configured, so Renovate queries the wrong endpoint.

How to fix it

Point Renovate at the right registry with credentials

1. Add registryUrls (or a packageRule) for the private feed.
2. Add a matching hostRules entry with the token.
3. Re-run so the lookup queries the correct authenticated endpoint.

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "packageRules": [
    {
      "matchPackagePrefixes": ["@vendor/"],
      "registryUrls": ["https://pkgs.internal.example.com/npm/"]
    }
  ]
}

Retry transient registry errors

A one-off network failure or registry timeout can cause a lookup failure. Re-run Renovate before treating it as misconfiguration.

How to prevent it

• Configure registryUrls and hostRules for private packages.
• Set the correct datasource for custom package sources.
• Re-run transient lookup failures before changing config.

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