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Automated Dependency Updates for Terragrunt

Renovate supports updating Terragrunt dependencies.

File Matching

By default, Renovate will check any files matching the following regular expression: (^|/)terragrunt\.hcl$.

For details on how to extend a manager's fileMatch value, please follow this link.

Supported datasources

This manager supports extracting the following datasources: git-tags, github-tags, terraform-module.

Additional Information

Currently by default, Terragrunt support is limited to Terraform registry sources and GitHub sources that include SemVer refs, e.g. like github.com/hashicorp/example?ref=v1.0.0.

You can create a custom versioning config to support non-SemVer references. For example, if you want to reference a tag like module-v1.2.5, a block like this would work:

{
  "terraform": {
    "versioning": "regex:^((?<compatibility>.*)-v|v*)(?<major>\\d+)\\.(?<minor>\\d+)\\.(?<patch>\\d+)$"
  }
}

Pinned Terragrunt dependencies like the following will receive a PR whenever there is a newer version available:

terraform {
  source = "github.com/hashicorp/example?ref=v1.0.0"
}
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