diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..1890101
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,77 @@
+name: Release
+
+on:
+  push:
+    branches: [main]
+
+concurrency:
+  group: release-${{ github.ref }}
+  cancel-in-progress: false
+
+permissions:
+  contents: write
+
+jobs:
+  publish-and-sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: 22.x
+          cache: npm
+          registry-url: https://registry.npmjs.org
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test
+
+      - name: Resolve package version
+        id: pkg
+        run: |
+          VERSION=$(node -p "require('./package.json').version")
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+      - name: Check if version is already on npm
+        id: npm
+        run: |
+          VERSION="${{ steps.pkg.outputs.version }}"
+          if npm view "sequelize-jest-kit@${VERSION}" version 2>/dev/null | grep -q .; then
+            echo "published=true" >> "$GITHUB_OUTPUT"
+            echo "Version ${VERSION} is already on npm; skipping publish and GitHub release."
+          else
+            echo "published=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Publish to npm
+        if: steps.npm.outputs.published == 'false'
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: npm publish
+
+      - name: Create GitHub release
+        if: steps.npm.outputs.published == 'false'
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: v${{ steps.pkg.outputs.version }}
+          name: v${{ steps.pkg.outputs.version }}
+          generate_release_notes: true
+
+      - name: Merge main into develop and push
+        if: steps.npm.outputs.published == 'false'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git fetch origin develop
+          git checkout -B develop origin/develop
+          git merge origin/main --no-edit -m "chore: sync develop with main after v${{ steps.pkg.outputs.version }}"
+          git push origin develop