ci: drop pre-cosign-v3 goreleaser versions from tests (#554 )

GoReleaser v2.13.0 was the first release to ship the cosign v3 sigstore-bundle 'checksums.txt.sigstore.json' alongside the archive. Earlier releases only publish a cosign v2 detached '.sig', which the action's verifier does not understand and silently skips. Drop '~> 1.26' / '~> 2.6' / 'v0.182.0' / '~> v1' from the matrix and the install tests; pin '~> 2.13' as the minimum-supported version we actively exercise in CI. Document v2.13.0 as the minimum cosign- verifiable version in the README. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
docs: document cosign verification in README (#553 )
2026-08-28 23:18:27 +00:00 · 2026-04-18 15:39:15 -03:00 · 2026-04-18 15:24:42 -03:00 · 2026-04-18 15:23:21 -03:00 · 2026-04-18 15:22:23 -03:00 · 2026-04-18 14:36:59 -03:00
31 changed files with 6490 additions and 6495 deletions
@@ -1,4 +1,2 @@
-/.yarn/releases/** binary
-/.yarn/plugins/** binary
-/dist/** linguist-generated=true
-/lib/** linguist-generated=true
+/dist/** linguist-generated=true -diff
+/lib/** linguist-generated=true -diff
@@ -3,18 +3,28 @@ updates:
  - package-ecosystem: "github-actions"
    directory: "/"
    schedule:
-      interval: "daily"
-      time: "06:00"
-      timezone: "Europe/Paris"
+      interval: monthly
    labels:
      - "dependencies"
+    commit-message:
+      prefix: "ci"
+      include: "scope"
+    groups:
+      actions:
+        patterns:
+          - "*"
  - package-ecosystem: "npm"
    directory: "/"
    schedule:
-      interval: "daily"
-      time: "06:00"
-      timezone: "Europe/Paris"
+      interval: monthly
    allow:
      - dependency-type: "production"
    labels:
      - "dependencies"
+    commit-message:
+      prefix: "chore"
+      include: "scope"
+    groups:
+      npm:
+        patterns:
+          - "*"
@@ -32,22 +32,21 @@ jobs:
          - windows-latest
        version:
          - latest
-          - '~> 2.6'
-          - '~> 1.26'
+          - '~> 2.13'
        distribution:
          - goreleaser
          - goreleaser-pro
    steps:
      -
        name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
      -
        name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
        with:
-          go-version: 1.18
+          go-version: stable
      -
        name: Check
        uses: ./
@@ -74,22 +73,28 @@ jobs:
      matrix:
        version:
          - latest
-          - '~> 2.6'
-          - '~> 1.26'
+          - '~> 2.13'
        distribution:
          - goreleaser
          - goreleaser-pro
+        cosign:
+          - true
+          - false
    steps:
      -
        name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
      -
        name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
        with:
          go-version: 1.18
+      -
+        name: Install cosign
+        if: matrix.cosign
+        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 # v3.9.2
      -
        name: GoReleaser
        if: ${{ !(github.event_name == 'pull_request' && matrix.distribution == 'goreleaser-pro') }}
@@ -117,18 +122,18 @@ jobs:
    steps:
      -
        name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
      -
        name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
        with:
          go-version: 1.18
      -
        name: Import GPG key
        id: import_gpg
-        uses: crazy-max/ghaction-import-gpg@v6
+        uses: crazy-max/ghaction-import-gpg@2dc316deee8e90f13e1a351ab510b4d5bc0c82cd # v7.0.0
        with:
          gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY_TEST }}
          passphrase: ${{ secrets.PASSPHRASE_TEST }}
@@ -156,12 +161,12 @@ jobs:
    steps:
      -
        name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
      -
        name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
        with:
          go-version: 1.18
      -
@@ -178,7 +183,7 @@ jobs:
          workdir: ./test
      -
        name: Upload assets
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
        with:
          name: myapp
          path: ./test/dist/*
@@ -188,12 +193,12 @@ jobs:
    steps:
      -
        name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
      -
        name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
        with:
          go-version: 1.18
      -
@@ -222,12 +227,12 @@ jobs:
    steps:
      -
        name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
      -
        name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
        with:
          go-version: 1.18
      -
@@ -0,0 +1,46 @@
+name: release major tag
+
+run-name: Move ${{ github.event.inputs.major_version }} to ${{ github.event.inputs.target }}
+
+on:
+  workflow_dispatch:
+    inputs:
+      target:
+        description: The tag, branch, or SHA the major version should point to (e.g. v7.1.0)
+        required: true
+      major_version:
+        type: choice
+        description: The major version tag to move
+        options:
+          - v7
+          - v6
+          - v5
+          - v4
+          - v3
+          - v2
+          - v1
+
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions
+permissions:
+  contents: write
+
+jobs:
+  tag:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          fetch-depth: 0
+      -
+        name: Git config
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+      -
+        name: Move ${{ github.event.inputs.major_version }} to ${{ github.event.inputs.target }}
+        run: git tag -f ${{ github.event.inputs.major_version }} ${{ github.event.inputs.target }}
+      -
+        name: Push
+        run: git push origin ${{ github.event.inputs.major_version }} --force
@@ -21,17 +21,26 @@ jobs:
    steps:
      -
        name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
      -
-        name: Test
-        uses: docker/bake-action@v6
+        name: Setup Node.js
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v6.0.0
        with:
-          source: .
-          targets: test
+          node-version-file: '.node-version'
+          cache: npm
+      -
+        name: Install cosign
+        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 # v3.9.2
+      -
+        name: Install dependencies
+        run: npm ci
+      -
+        name: Test
+        run: npm test
      -
        name: Upload coverage
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
        with:
          files: ./coverage/clover.xml
@@ -16,32 +16,83 @@ on:
  pull_request:

 jobs:
-  prepare:
+  lint:
    runs-on: ubuntu-latest
-    outputs:
-      targets: ${{ steps.generate.outputs.targets }}
    steps:
      -
        name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      -
-        name: List targets
-        id: generate
-        uses: docker/bake-action/subaction/list-targets@v6
+        name: Setup Node.js
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v6.0.0
        with:
-          target: validate
+          node-version-file: '.node-version'
+          cache: npm
+      -
+        name: Install dependencies
+        run: npm ci
+      -
+        name: Format check
+        run: npm run format-check
+      -
+        name: Lint
+        run: npm run lint

-  validate:
+  build:
    runs-on: ubuntu-latest
-    needs:
-      - prepare
-    strategy:
-      fail-fast: false
-      matrix:
-        target: ${{ fromJson(needs.prepare.outputs.targets) }}
    steps:
      -
-        name: Validate
-        uses: docker/bake-action@v6
+        name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      -
+        name: Setup Node.js
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v6.0.0
        with:
-          targets: ${{ matrix.target }}
+          node-version-file: '.node-version'
+          cache: npm
+      -
+        name: Install dependencies
+        run: npm ci --ignore-scripts
+      -
+        name: Rebuild dist
+        run: npm run build
+      -
+        name: Compare dist
+        id: diff
+        run: |
+          if [ "$(git diff --ignore-space-at-eol dist | wc -l)" -gt "0" ]; then
+            echo "Detected uncommitted changes after build. Run 'npm run build' and commit dist/." >&2
+            git diff dist
+            exit 1
+          fi
+      -
+        name: Upload built dist on failure
+        if: ${{ failure() && steps.diff.conclusion == 'failure' }}
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+        with:
+          name: dist
+          path: dist
+
+  vendor:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      -
+        name: Setup Node.js
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v6.0.0
+        with:
+          node-version-file: '.node-version'
+          cache: npm
+      -
+        name: Refresh package-lock.json
+        run: npm install --package-lock-only
+      -
+        name: Compare package-lock.json
+        run: |
+          if [ -n "$(git status --porcelain -- package-lock.json)" ]; then
+            echo "package-lock.json is out of sync with package.json. Run 'npm install' and commit." >&2
+            git diff package-lock.json
+            exit 1
+          fi
@@ -4,8 +4,6 @@
 logs
 *.log
 npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
 lerna-debug.log*
 .pnpm-debug.log*

@@ -35,8 +33,6 @@ jspm_packages/
 # Optional eslint cache
 .eslintcache

-# Yarn Integrity file
-.yarn-integrity

 # dotenv environment variable files
 .env
@@ -44,10 +40,4 @@ jspm_packages/
 .env.test.local
 .env.production.local
 .env.local
-
-# yarn v2
-.yarn/cache
-.yarn/unplugged
-.yarn/build-state.yml
-.yarn/install-state.gz
-.pnp.*
+provenance.json
@@ -0,0 +1 @@
+24
@@ -1,13 +0,0 @@
-logFilters:
-  - code: YN0013
-    level: discard
-  - code: YN0019
-    level: discard
-  - code: YN0076
-    level: discard
-
-nodeLinker: node-modules
-
-plugins:
-  - path: .yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs
-    spec: "@yarnpkg/plugin-interactive-tools"
@@ -0,0 +1,89 @@
+# Contributing
+
+Thanks for your interest in contributing!
+
+## Prerequisites
+
+- [Node.js](https://nodejs.org/) — version pinned in [`.node-version`](./.node-version).
+  Tools like [`nvm`](https://github.com/nvm-sh/nvm), [`fnm`](https://github.com/Schniz/fnm),
+  [`asdf`](https://asdf-vm.com/), or [`mise`](https://mise.jdx.dev/) read this file
+  automatically.
+- [`cosign`](https://docs.sigstore.dev/cosign/installation/) — only required if you
+  want to run the signature-verification integration tests locally.
+
+## Setup
+
+```sh
+npm ci
+```
+
+## Pre-commit checklist
+
+Before committing changes to `src/`, `__tests__/`, `package.json`,
+`package-lock.json`, or `action.yml`:
+
+```sh
+npm run pre-checkin
+```
+
+That runs `format` + `build` + `test` — the same checks CI runs.
+
+Then commit `dist/` along with your source changes; the action runtime loads
+`dist/index.js` directly, so it must stay in sync.
+
+If CI's `validate / build` job fails because `dist/` differs from a fresh
+build, just download the `dist` artifact from the failed run and commit it —
+or rerun `npm run build` locally with the Node version in `.node-version`.
+
+## npm scripts
+
+| Script              | Purpose                                          |
+| ------------------- | ------------------------------------------------ |
+| `npm run build`     | Bundle `src/` to `dist/index.js` via `ncc`       |
+| `npm run format`    | Run Prettier (write)                             |
+| `npm run format-check` | Run Prettier (check only, used in CI)         |
+| `npm run lint`      | Run ESLint (check only, used in CI)              |
+| `npm run lint:fix`  | Run ESLint with `--fix`                          |
+| `npm test`          | Run Jest with coverage                           |
+| `npm run pre-checkin` | `format` + `lint:fix` + `build` + `test`       |
+
+## Tests
+
+`npm test` runs the full Jest suite, including integration tests that:
+
+- Download real GoReleaser releases from GitHub
+- Verify `checksums.txt` against the downloaded archive
+- Verify the cosign sigstore bundle (skipped if `cosign` isn't on `PATH`,
+  but the CI image always has it installed)
+
+These need outbound network access. Offline / restrictive-proxy runs will
+have those tests fail — that's expected.
+
+## Commit messages
+
+Use [Conventional Commits](https://www.conventionalcommits.org/) (`feat:`,
+`fix:`, `test:`, `docs:`, `chore:`, `ci:`, …). Keep the subject ≤72 chars.
+
+## Pull requests
+
+- Target `master`.
+- Make sure `npm run pre-checkin` passes.
+- One logical change per PR is easier to review.
+- The `signing` CI job and `goreleaser-pro` matrix entries are skipped on PRs
+  from forks because they need repository secrets — that's expected and not
+  something you need to fix.
+
+## Releasing (maintainers)
+
+1. Create a new GitHub Release with a semver tag (e.g. `v7.1.0`) — either
+   through the UI or `gh release create v7.1.0 --generate-notes`.
+2. Once the release exists, run the [**release major tag**](./.github/workflows/release-major-tag.yml)
+   workflow from the Actions tab:
+   - `target`: the new tag (e.g. `v7.1.0`)
+   - `major_version`: the major version to repoint (e.g. `v7`)
+
+   This force-pushes the major tag to the new release so consumers using
+   `goreleaser/goreleaser-action@v7` pick up the change.
+
+   The same workflow doubles as a rollback tool — pass an older tag as
+   `target` to revert the major.
@@ -16,6 +16,7 @@ ___

 * [Usage](#usage)
  * [Workflow](#workflow)
+  * [Verification](#verification)
  * [Run on new tag](#run-on-new-tag)
  * [Signing](#signing)
  * [Upload artifacts](#upload-artifacts)
@@ -54,15 +55,15 @@ jobs:
    steps:
      -
        name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
        with:
          fetch-depth: 0
      -
        name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
      -
        name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v6
+        uses: goreleaser/goreleaser-action@v7
        with:
          # either 'goreleaser' (default) or 'goreleaser-pro'
          distribution: goreleaser
@@ -77,6 +78,44 @@ jobs:

 > **IMPORTANT**: note the `fetch-depth: 0` input in `Checkout` step. It is required  for the changelog to work correctly.

+### Verification
+
+The action verifies the integrity of the downloaded GoReleaser archive
+against the published `checksums.txt` automatically — no configuration
+required.
+
+If [`cosign`](https://docs.sigstore.dev/cosign/) is available on `PATH`, the
+action will additionally verify the cosign sigstore signature of the
+checksums file against the GoReleaser release workflow's OIDC identity. If
+`cosign` isn't installed, this step is silently skipped.
+
+> **Note**: cosign signature verification requires GoReleaser **v2.13.0 or
+> newer** (and the matching `nightly`). Earlier releases ship a `.sig`
+> detached signature signed with cosign v2, which is not compatible with
+> the cosign v3 sigstore-bundle format the action verifies. For older
+> versions the cosign step is silently skipped — only the `checksums.txt`
+> SHA-256 verification runs.
+
+To enable signature verification, install cosign before running the action:
+
+```yaml
+      -
+        name: Install cosign
+        uses: sigstore/cosign-installer@v3
+      -
+        name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v7
+        with:
+          distribution: goreleaser
+          version: '~> v2'
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+```
+
+Both checksum and signature verification work for tagged releases (≥ v2.13.0)
+and the `nightly` channel.
+
 ### Run on new tag

 If you want to run GoReleaser only on new tag, you can use this event:
@@ -93,7 +132,7 @@ Or with a condition on GoReleaser step:
 ```yaml
      -
        name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v6
+        uses: goreleaser/goreleaser-action@v7
        if: startsWith(github.ref, 'refs/tags/')
        with:
          version: '~> v2'
@@ -113,13 +152,13 @@ the [Import GPG](https://github.com/crazy-max/ghaction-import-gpg) GitHub Action
      -
        name: Import GPG key
        id: import_gpg
-        uses: crazy-max/ghaction-import-gpg@v6
+        uses: crazy-max/ghaction-import-gpg@v7
        with:
          gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
          passphrase: ${{ secrets.PASSPHRASE }}
      -
        name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v6
+        uses: goreleaser/goreleaser-action@v7
        with:
          version: '~> v2'
          args: release --clean
@@ -144,7 +183,7 @@ purposes. You can do that with the [actions/upload-artifact](https://github.com/
 ```yaml
      -
        name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v6
+        uses: goreleaser/goreleaser-action@v7
        with:
          version: '~> v2'
          args: release --clean
@@ -153,7 +192,7 @@ purposes. You can do that with the [actions/upload-artifact](https://github.com/
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      -
        name: Upload assets
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
        with:
          name: myapp
          path: myfolder/dist/*
@@ -165,7 +204,7 @@ purposes. You can do that with the [actions/upload-artifact](https://github.com/
 steps:
  -
    name: Install GoReleaser
-    uses: goreleaser/goreleaser-action@v6
+    uses: goreleaser/goreleaser-action@v7
    with:
      install-only: true
  -
@@ -219,7 +258,7 @@ secret named `GH_PAT`, the step will look like this:
 ```yaml
      -
        name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v6
+        uses: goreleaser/goreleaser-action@v7
        with:
          version: '~> v2'
          args: release --clean
@@ -233,15 +272,16 @@ If you need the auto-snapshot feature, take a look at [this example repository](

 ## Development

+See [CONTRIBUTING.md](./CONTRIBUTING.md) for the full development workflow.
+
+Quick reference:
+
 ```
-# format code and build javascript artifacts
-docker buildx bake pre-checkin
+# install dependencies
+npm ci

-# validate all code has correctly formatted and built
-docker buildx bake validate
-
-# run tests
-docker buildx bake test
+# format, build dist/, and run tests
+npm run pre-checkin
 ```

 ## License
@@ -22,7 +22,7 @@ describe('getRelease', () => {

  it('unknown GoReleaser release', async () => {
    await expect(github.getRelease('goreleaser', 'foo')).rejects.toThrow(
-      new Error('Cannot find GoReleaser release foo in https://goreleaser.com/static/releases.json')
+      new Error('Cannot find GoReleaser release foo in https://goreleaser.com/releases.json')
    );
  });

@@ -100,7 +100,7 @@ describe('getRelease', () => {

  it('unknown GoReleaser Pro release', async () => {
    await expect(github.getRelease('goreleaser-pro', 'foo')).rejects.toThrow(
-      new Error('Cannot find GoReleaser release foo in https://goreleaser.com/static/releases-pro.json')
+      new Error('Cannot find GoReleaser release foo in https://goreleaser.com/releases-pro.json')
    );
  });
 });
@@ -1,38 +1,26 @@
 import {describe, expect, it} from '@jest/globals';
 import * as fs from 'fs';
+import * as os from 'os';
+import * as path from 'path';
+import * as io from '@actions/io';
 import * as goreleaser from '../src/goreleaser';

 describe('install', () => {
-  it('acquires v0.182.0 version of GoReleaser', async () => {
-    const bin = await goreleaser.install('goreleaser', 'v0.182.0');
-    expect(fs.existsSync(bin)).toBe(true);
-  }, 100000);
-
  it('acquires latest version of GoReleaser', async () => {
    const bin = await goreleaser.install('goreleaser', 'latest');
    expect(fs.existsSync(bin)).toBe(true);
  }, 100000);

-  it('acquires v0.182.0-pro version of GoReleaser Pro', async () => {
-    const bin = await goreleaser.install('goreleaser-pro', 'v0.182.0-pro');
-    expect(fs.existsSync(bin)).toBe(true);
-  }, 100000);
-
-  it('acquires latest v1 version of GoReleaser', async () => {
-    const bin = await goreleaser.install('goreleaser', '~> v1');
-    expect(fs.existsSync(bin)).toBe(true);
-  }, 100000);
-
-  it('acquires latest v1 version of GoReleaser Pro', async () => {
-    const bin = await goreleaser.install('goreleaser-pro', '~> v1');
-    expect(fs.existsSync(bin)).toBe(true);
-  }, 100000);
-
  it('acquires latest v2 version of GoReleaser', async () => {
    const bin = await goreleaser.install('goreleaser', '~> v2');
    expect(fs.existsSync(bin)).toBe(true);
  }, 100000);

+  it('acquires v2.13.0 (minimum cosign-verifiable) version of GoReleaser', async () => {
+    const bin = await goreleaser.install('goreleaser', 'v2.13.0');
+    expect(fs.existsSync(bin)).toBe(true);
+  }, 100000);
+
  it('acquires latest v2 version of GoReleaser Pro', async () => {
    const bin = await goreleaser.install('goreleaser-pro', '~> v2');
    expect(fs.existsSync(bin)).toBe(true);
@@ -53,3 +41,92 @@ describe('distribSuffix', () => {
    expect(goreleaser.distribSuffix('goreleaser')).toEqual('');
  });
 });
+
+describe('findChecksum', () => {
+  const sample = [
+    '*malformed-line',
+    '',
+    'abc123  goreleaser_Linux_x86_64.tar.gz',
+    'def456 *goreleaser_Darwin_all.tar.gz',
+    '789xyz  checksums.txt'
+  ].join('\n');
+
+  it('finds a checksum by filename', () => {
+    expect(goreleaser.findChecksum(sample, 'goreleaser_Linux_x86_64.tar.gz')).toEqual('abc123');
+  });
+
+  it('strips a leading asterisk on the filename (binary mode)', () => {
+    expect(goreleaser.findChecksum(sample, 'goreleaser_Darwin_all.tar.gz')).toEqual('def456');
+  });
+
+  it('returns undefined when not present', () => {
+    expect(goreleaser.findChecksum(sample, 'missing.tar.gz')).toBeUndefined();
+  });
+});
+
+describe('getCertificateIdentity', () => {
+  it('returns the OSS workflow identity for tagged releases', () => {
+    expect(goreleaser.getCertificateIdentity('goreleaser', 'v2.15.3')).toEqual(
+      'https://github.com/goreleaser/goreleaser/.github/workflows/release.yml@refs/tags/v2.15.3'
+    );
+  });
+
+  it('returns the Pro internal workflow identity for tagged releases', () => {
+    expect(goreleaser.getCertificateIdentity('goreleaser-pro', 'v2.15.3')).toEqual(
+      'https://github.com/goreleaser/goreleaser-pro-internal/.github/workflows/release-pro.yml@refs/tags/v2.15.3'
+    );
+  });
+
+  it('uses nightly-oss.yml@refs/heads/main for OSS nightly', () => {
+    expect(goreleaser.getCertificateIdentity('goreleaser', 'nightly')).toEqual(
+      'https://github.com/goreleaser/goreleaser/.github/workflows/nightly-oss.yml@refs/heads/main'
+    );
+  });
+
+  it('uses nightly-pro.yml@refs/heads/main for Pro nightly', () => {
+    expect(goreleaser.getCertificateIdentity('goreleaser-pro', 'nightly')).toEqual(
+      'https://github.com/goreleaser/goreleaser-pro-internal/.github/workflows/nightly-pro.yml@refs/heads/main'
+    );
+  });
+});
+
+describe('verifyChecksum', () => {
+  const requireCosign = async (): Promise<void> => {
+    const cosign = await io.which('cosign', false);
+    if (!cosign) {
+      throw new Error(
+        'cosign must be installed in PATH to run this integration test (apk add cosign / sigstore/cosign-installer)'
+      );
+    }
+  };
+
+  it('verifies a tagged OSS release end-to-end with cosign', async () => {
+    await requireCosign();
+    const bin = await goreleaser.install('goreleaser', 'v2.15.3');
+    expect(fs.existsSync(bin)).toBe(true);
+  }, 120000);
+
+  it('verifies the OSS nightly release end-to-end with cosign', async () => {
+    await requireCosign();
+    const bin = await goreleaser.install('goreleaser', 'nightly');
+    expect(fs.existsSync(bin)).toBe(true);
+  }, 120000);
+
+  it('throws on checksum mismatch', async () => {
+    const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'gha-'));
+    const archive = path.join(dir, 'fake.tar.gz');
+    fs.writeFileSync(archive, 'tampered content');
+    await expect(
+      goreleaser.verifyChecksum('goreleaser', 'v2.15.3', archive, 'goreleaser_Linux_x86_64.tar.gz')
+    ).rejects.toThrow(/Checksum mismatch/);
+  }, 60000);
+
+  it('throws when the filename is not in checksums.txt', async () => {
+    const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'gha-'));
+    const archive = path.join(dir, 'whatever.tar.gz');
+    fs.writeFileSync(archive, '');
+    await expect(
+      goreleaser.verifyChecksum('goreleaser', 'v2.15.3', archive, 'not-a-real-asset.tar.gz')
+    ).rejects.toThrow(/Could not find not-a-real-asset.tar.gz in checksums.txt/);
+  }, 60000);
+});
@@ -34,5 +34,5 @@ outputs:
    description: 'Build result metadata'

 runs:
-  using: 'node20'
+  using: 'node24'
  main: 'dist/index.js'
@@ -1,82 +0,0 @@
-# syntax=docker/dockerfile:1
-
-ARG NODE_VERSION=20
-
-FROM node:${NODE_VERSION}-alpine AS base
-RUN apk add --no-cache cpio findutils git
-WORKDIR /src
-RUN --mount=type=bind,target=.,rw \
-  --mount=type=cache,target=/src/.yarn/cache <<EOT
-  corepack enable
-  yarn --version
-  yarn config set --home enableTelemetry 0
-EOT
-
-FROM base AS deps
-RUN --mount=type=bind,target=.,rw \
-  --mount=type=cache,target=/src/.yarn/cache \
-  --mount=type=cache,target=/src/node_modules \
-  yarn install && mkdir /vendor && cp yarn.lock /vendor
-
-FROM scratch AS vendor-update
-COPY --from=deps /vendor /
-
-FROM deps AS vendor-validate
-RUN --mount=type=bind,target=.,rw <<EOT
-  set -e
-  git add -A
-  cp -rf /vendor/* .
-  if [ -n "$(git status --porcelain -- yarn.lock)" ]; then
-    echo >&2 'ERROR: Vendor result differs. Please vendor your package with "docker buildx bake vendor"'
-    git status --porcelain -- yarn.lock
-    exit 1
-  fi
-EOT
-
-FROM deps AS build
-RUN --mount=type=bind,target=.,rw \
-  --mount=type=cache,target=/src/.yarn/cache \
-  --mount=type=cache,target=/src/node_modules \
-  yarn run build && mkdir /out && cp -Rf dist /out/
-
-FROM scratch AS build-update
-COPY --from=build /out /
-
-FROM build AS build-validate
-RUN --mount=type=bind,target=.,rw <<EOT
-  set -e
-  git add -A
-  cp -rf /out/* .
-  if [ -n "$(git status --porcelain -- dist)" ]; then
-    echo >&2 'ERROR: Build result differs. Please build first with "docker buildx bake build"'
-    git status --porcelain -- dist
-    exit 1
-  fi
-EOT
-
-FROM deps AS format
-RUN --mount=type=bind,target=.,rw \
-  --mount=type=cache,target=/src/.yarn/cache \
-  --mount=type=cache,target=/src/node_modules \
-  yarn run format \
-  && mkdir /out && find . -name '*.ts' -not -path './node_modules/*' -not -path './.yarn/*' | cpio -pdm /out
-
-FROM scratch AS format-update
-COPY --from=format /out /
-
-FROM deps AS lint
-RUN --mount=type=bind,target=.,rw \
-  --mount=type=cache,target=/src/.yarn/cache \
-  --mount=type=cache,target=/src/node_modules \
-  yarn run lint
-
-FROM deps AS test
-ENV RUNNER_TEMP=/tmp/github_runner
-ENV RUNNER_TOOL_CACHE=/tmp/github_tool_cache
-RUN --mount=type=bind,target=.,rw \
-  --mount=type=cache,target=/src/.yarn/cache \
-  --mount=type=cache,target=/src/node_modules \
-  yarn run test --coverage --coverageDirectory=/tmp/coverage
-
-FROM scratch AS test-coverage
-COPY --from=test /tmp/coverage /
@@ -71,33 +71,11 @@ The above copyright notice and this permission notice shall be included in all c

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

-@fastify/busboy
-MIT
-Copyright Brian White. All rights reserved.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to
-deal in the Software without restriction, including without limitation the
-rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-sell copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-IN THE SOFTWARE.
-
 ansi-regex
 MIT
 MIT License

-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)

 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

@@ -110,7 +88,7 @@ ansi-styles
 MIT
 MIT License

-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)

 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

@@ -137,42 +115,6 @@ WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.


-color-convert
-MIT
-Copyright (c) 2011-2016 Heather Arthur <fayearthur@gmail.com>
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-
-
-color-name
-MIT
-The MIT License (MIT)
-Copyright (c) 2015 Dmitry Ivanov
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
 emoji-regex
 MIT
 Copyright Mathias Bynens <https://mathiasbynens.be/>
@@ -220,11 +162,11 @@ Permission to use, copy, modify, and/or distribute this software for any purpose
 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.


-is-fullwidth-code-point
+get-east-asian-width
 MIT
 MIT License

-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)

 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

@@ -258,32 +200,6 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.


-require-directory
-MIT
-The MIT License (MIT)
-
-Copyright (c) 2011 Troy Goode <troygoode@gmail.com>
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-
 semver
 ISC
 The ISC License
@@ -307,7 +223,7 @@ string-width
 MIT
 MIT License

-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)

 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

@@ -320,7 +236,7 @@ strip-ansi
 MIT
 MIT License

-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)

 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}
@@ -1,61 +0,0 @@
-target "_common" {
-  args = {
-    BUILDKIT_CONTEXT_KEEP_GIT_DIR = 1
-  }
-}
-
-group "default" {
-  targets = ["build"]
-}
-
-group "pre-checkin" {
-  targets = ["vendor", "format", "build"]
-}
-
-group "validate" {
-  targets = ["lint", "build-validate", "vendor-validate"]
-}
-
-target "build" {
-  dockerfile = "dev.Dockerfile"
-  target = "build-update"
-  output = ["."]
-}
-
-target "build-validate" {
-  inherits = ["_common"]
-  dockerfile = "dev.Dockerfile"
-  target = "build-validate"
-  output = ["type=cacheonly"]
-}
-
-target "format" {
-  dockerfile = "dev.Dockerfile"
-  target = "format-update"
-  output = ["."]
-}
-
-target "lint" {
-  dockerfile = "dev.Dockerfile"
-  target = "lint"
-  output = ["type=cacheonly"]
-}
-
-target "vendor" {
-  dockerfile = "dev.Dockerfile"
-  target = "vendor-update"
-  output = ["."]
-}
-
-target "vendor-validate" {
-  inherits = ["_common"]
-  dockerfile = "dev.Dockerfile"
-  target = "vendor-validate"
-  output = ["type=cacheonly"]
-}
-
-target "test" {
-  dockerfile = "dev.Dockerfile"
-  target = "test-coverage"
-  output = ["./coverage"]
-}
@@ -1,11 +1,24 @@
-module.exports = {
+import type {Config} from 'jest';
+
+const config: Config = {
  clearMocks: true,
  moduleFileExtensions: ['js', 'ts'],
  setupFiles: ['dotenv/config', '<rootDir>/src/test_setup.ts'],
  testMatch: ['**/*.test.ts'],
  testTimeout: 30000,
  transform: {
-    '^.+\\.ts$': 'ts-jest'
+    '^.+\\.ts$': [
+      'ts-jest',
+      {
+        useESM: true
+      }
+    ]
+  },
+  extensionsToTreatAsEsm: ['.ts'],
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1'
  },
  verbose: true
 };
+
+export default config;
@@ -2,16 +2,15 @@
  "name": "goreleaser-action",
  "description": "GitHub Action for GoReleaser, a release automation tool for Go projects",
  "main": "src/main.ts",
+  "type": "module",
  "scripts": {
-    "build": "ncc build src/main.ts --source-map --minify --license licenses.txt",
-    "lint": "yarn run prettier && yarn run eslint",
-    "format": "yarn run prettier:fix && yarn run eslint:fix",
-    "eslint": "eslint --max-warnings=0 .",
-    "eslint:fix": "eslint --fix .",
-    "prettier": "prettier --check \"./**/*.ts\"",
-    "prettier:fix": "prettier --write \"./**/*.ts\"",
-    "test": "jest",
-    "all": "yarn run build && yarn run format && yarn test"
+    "build": "ncc build src/main.ts --minify --license licenses.txt",
+    "format": "prettier --write \"**/*.ts\"",
+    "format-check": "prettier --check \"**/*.ts\"",
+    "lint": "eslint --max-warnings=0 \"**/*.ts\"",
+    "lint:fix": "eslint --fix \"**/*.ts\"",
+    "test": "NODE_OPTIONS='--experimental-vm-modules' jest --coverage",
+    "pre-checkin": "npm run format && npm run lint:fix && npm run build && npm test"
  },
  "repository": {
    "type": "git",
@@ -24,18 +23,18 @@
  ],
  "author": "CrazyMax",
  "license": "MIT",
-  "packageManager": "yarn@3.6.3",
+
  "dependencies": {
-    "@actions/core": "^1.11.1",
-    "@actions/exec": "^1.1.1",
-    "@actions/http-client": "^2.2.3",
-    "@actions/tool-cache": "^2.0.2",
-    "js-yaml": "^4.1.0",
-    "semver": "^7.7.2",
-    "yargs": "^17.7.2"
+    "@actions/core": "^3.0.0",
+    "@actions/exec": "^3.0.0",
+    "@actions/http-client": "^4.0.0",
+    "@actions/tool-cache": "^4.0.0",
+    "js-yaml": "^4.1.1",
+    "semver": "^7.7.4",
+    "yargs": "^18.0.0"
  },
  "devDependencies": {
-    "@types/node": "^20.6.0",
+    "@types/node": "^24.0.0",
    "@typescript-eslint/eslint-plugin": "^6.6.0",
    "@typescript-eslint/parser": "^6.6.0",
    "@vercel/ncc": "^0.38.0",
@@ -59,7 +59,7 @@ export const getReleaseTag = async (distribution: string, version: string): Prom

  const tag: string = (await resolveVersion(distribution, version)) || version;
  const suffix: string = goreleaser.distribSuffix(distribution);
-  const url = `https://goreleaser.com/static/releases${suffix}.json`;
+  const url = `https://goreleaser.com/releases${suffix}.json`;

  const releases = await withRetry(async () => {
    const http: httpm.HttpClient = new httpm.HttpClient('goreleaser-action');
@@ -108,7 +108,7 @@ interface GitHubTag {

 const getAllTags = async (distribution: string): Promise<Array<string>> => {
  const suffix: string = goreleaser.distribSuffix(distribution);
-  const url = `https://goreleaser.com/static/releases${suffix}.json`;
+  const url = `https://goreleaser.com/releases${suffix}.json`;
  core.debug(`Downloading ${url}`);

  return withRetry(async () => {
@@ -1,26 +1,26 @@
+import * as crypto from 'crypto';
 import * as fs from 'fs';
 import * as path from 'path';
-import * as util from 'util';
 import yaml from 'js-yaml';
 import * as context from './context';
 import * as github from './github';
 import * as core from '@actions/core';
+import * as exec from '@actions/exec';
+import * as io from '@actions/io';
 import * as tc from '@actions/tool-cache';

 export async function install(distribution: string, version: string): Promise<string> {
  const release: github.GitHubRelease = await github.getRelease(distribution, version);
  const filename = getFilename(distribution);
-  const downloadUrl = util.format(
-    'https://github.com/goreleaser/%s/releases/download/%s/%s',
-    distribution,
-    release.tag_name,
-    filename
-  );
+  const baseUrl = `https://github.com/goreleaser/${distribution}/releases/download/${release.tag_name}`;
+  const downloadUrl = `${baseUrl}/${filename}`;

  core.info(`Downloading ${downloadUrl}`);
  const downloadPath: string = await tc.downloadTool(downloadUrl);
  core.debug(`Downloaded to ${downloadPath}`);

+  await verifyChecksum(distribution, release.tag_name, downloadPath, filename);
+
  core.info('Extracting GoReleaser');
  let extPath: string;
  if (context.osPlat == 'win32') {
@@ -45,6 +45,92 @@ export async function install(distribution: string, version: string): Promise<st
  return exePath;
 }

+export async function verifyChecksum(
+  distribution: string,
+  tag: string,
+  archivePath: string,
+  filename: string
+): Promise<void> {
+  const baseUrl = `https://github.com/goreleaser/${distribution}/releases/download/${tag}`;
+  let checksumsPath: string;
+  try {
+    core.info(`Downloading ${baseUrl}/checksums.txt`);
+    checksumsPath = await tc.downloadTool(`${baseUrl}/checksums.txt`);
+  } catch (e) {
+    core.warning(`Skipping checksum verification: unable to download checksums.txt: ${e.message}`);
+    return;
+  }
+
+  const sha256 = crypto.createHash('sha256').update(fs.readFileSync(archivePath)).digest('hex');
+  const expected = findChecksum(fs.readFileSync(checksumsPath, 'utf8'), filename);
+  if (!expected) {
+    throw new Error(`Could not find ${filename} in checksums.txt`);
+  }
+  if (expected.toLowerCase() !== sha256.toLowerCase()) {
+    throw new Error(`Checksum mismatch for ${filename}: expected ${expected}, got ${sha256}`);
+  }
+  core.info(`Checksum verified for ${filename}`);
+
+  await verifyCosignSignature(distribution, tag, baseUrl, checksumsPath);
+}
+
+export const findChecksum = (checksumsContent: string, filename: string): string | undefined => {
+  const match = checksumsContent
+    .split('\n')
+    .map(line => line.trim().split(/\s+/))
+    .find(parts => parts.length >= 2 && parts[1].replace(/^[*]/, '') === filename);
+  return match ? match[0] : undefined;
+};
+
+async function verifyCosignSignature(
+  distribution: string,
+  tag: string,
+  baseUrl: string,
+  checksumsPath: string
+): Promise<void> {
+  const cosign = await io.which('cosign', false);
+  if (!cosign) {
+    core.info('cosign not found in PATH, skipping signature verification');
+    return;
+  }
+
+  let bundlePath: string;
+  try {
+    core.info(`Downloading ${baseUrl}/checksums.txt.sigstore.json`);
+    bundlePath = await tc.downloadTool(`${baseUrl}/checksums.txt.sigstore.json`);
+  } catch (e) {
+    core.warning(`Skipping cosign signature verification: unable to download sigstore bundle: ${e.message}`);
+    return;
+  }
+
+  const certificateIdentity = getCertificateIdentity(distribution, tag);
+  core.info(`Verifying checksums.txt signature with cosign (identity: ${certificateIdentity})`);
+  await exec.exec(cosign, [
+    'verify-blob',
+    '--certificate-identity',
+    certificateIdentity,
+    '--certificate-oidc-issuer',
+    'https://token.actions.githubusercontent.com',
+    '--bundle',
+    bundlePath,
+    checksumsPath
+  ]);
+  core.info('cosign signature verified');
+}
+
+export const getCertificateIdentity = (distribution: string, tag: string): string => {
+  const pro = isPro(distribution);
+  if (tag === 'nightly') {
+    const workflow = pro ? 'nightly-pro.yml' : 'nightly-oss.yml';
+    const repo = pro ? 'goreleaser-pro-internal' : 'goreleaser';
+    return `https://github.com/goreleaser/${repo}/.github/workflows/${workflow}@refs/heads/main`;
+  }
+  if (pro) {
+    return `https://github.com/goreleaser/goreleaser-pro-internal/.github/workflows/release-pro.yml@refs/tags/${tag}`;
+  }
+  return `https://github.com/goreleaser/goreleaser/.github/workflows/release.yml@refs/tags/${tag}`;
+};
+
 export const distribSuffix = (distribution: string): string => {
  return isPro(distribution) ? '-pro' : '';
 };
@@ -81,7 +167,7 @@ const getFilename = (distribution: string): string => {
  const platform: string = context.osPlat == 'win32' ? 'Windows' : context.osPlat == 'darwin' ? 'Darwin' : 'Linux';
  const ext: string = context.osPlat == 'win32' ? 'zip' : 'tar.gz';
  const suffix: string = distribSuffix(distribution);
-  return util.format('goreleaser%s_%s_%s.%s', suffix, platform, arch, ext);
+  return `goreleaser${suffix}_${platform}_${arch}.${ext}`;
 };

 export async function getDistPath(yamlfile: string): Promise<string> {
@@ -1,6 +1,7 @@
 import * as fs from 'fs';
 import * as path from 'path';
 import yargs from 'yargs';
+import type {Arguments} from 'yargs';
 import * as context from './context';
 import * as goreleaser from './goreleaser';
 import * as core from '@actions/core';
@@ -28,7 +29,9 @@ async function run(): Promise<void> {
    }

    let yamlfile: string | unknown;
-    const argv: {config: string} = yargs.parse(inputs.args) as never;
+    const argv: Arguments<{config?: string}> = yargs(inputs.args).parseSync() as Arguments<{
+      config?: string;
+    }>;
    if (argv.config) {
      yamlfile = argv.config;
    } else {
@@ -1,4 +1,4 @@
-import tmp = require('tmp');
+import * as tmp from 'tmp';

 tmp.setGracefulCleanup();
 const tmpdir = tmp.dirSync({template: 'goreleaser-XXXXXX'});
@@ -1,8 +1,8 @@
 {
  "compilerOptions": {
    "esModuleInterop": true,
-    "target": "es6",
-    "module": "commonjs",
+    "target": "ES2024",
+    "module": "ESNext",
    "newLine": "lf",
    "outDir": "./lib",
    "rootDir": "./src",
@@ -10,6 +10,9 @@
    "noImplicitAny": false,
    "resolveJsonModule": true,
    "useUnknownInCatchVariables": false,
+    "moduleResolution": "node",
+    "strict": false,
+    "skipLibCheck": true
  },
  "exclude": [
    "node_modules",