diff --git a/.github/workflows/publish-on-semrel.yml b/.github/workflows/publish-on-semrel.yml
index 8a5553f..85ad9f8 100644
--- a/.github/workflows/publish-on-semrel.yml
+++ b/.github/workflows/publish-on-semrel.yml
@@ -1,4 +1,5 @@
 name: publish-on-semrel
+
 on:
   workflow_run:
     workflows: ["semantic-release"]
@@ -6,96 +7,70 @@ on:
   workflow_dispatch:
     inputs:
       tag:
-        description: "Tag a publicar (p.ej. v0.4.35). Vacío = último release"
+        description: "Tag a publicar (ej. v0.4.35)"
         required: false
-        default: ""
-permissions:
-  contents: read
-  packages: write
-  id-token: write
-concurrency:
-  group: publish-${{ github.event_name }}-${{ github.run_id }}
-  cancel-in-progress: false
+        type: string
+
 jobs:
   publish:
-    if: ${{ github.event_name == 'workflow_dispatch' || (github.event.workflow_run.conclusion == 'success') }}
+    if: >
+      (github.event_name == 'workflow_run' && github.event.workflow_run.conclusion == 'success') ||
+      (github.event_name == 'workflow_dispatch')
     runs-on: ubuntu-latest
-    environment: pypi
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout (con tags)
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
-      # Obtener tag del último release
-      - uses: actions/github-script@v7
-        id: latest
-        with:
-          script: |
-            const { data } = await github.repos.getLatestRelease({ owner: context.repo.owner, repo: context.repo.repo });
-            core.setOutput('tag', data.tag_name);
-
-      - name: Resolver TAG de publicación
+      - name: Resolver TAG
         id: tag
         shell: bash
         run: |
-          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]] && [[ -n "${{ github.event.inputs.tag }}" ]]; then
+          if [[ "${GITHUB_EVENT_NAME}" == "workflow_dispatch" && -n "${{ github.event.inputs.tag }}" ]]; then
             TAG="${{ github.event.inputs.tag }}"
           else
-            TAG="${{ steps.latest.outputs.tag }}"
+            git fetch --tags --force
+            TAG="$(git tag -l 'v*' --sort=-v:refname | head -n1)"
           fi
-          echo "TAG=$TAG" >> "$GITHUB_ENV"
+          echo "TAG=$TAG" | tee -a "$GITHUB_ENV"
           echo "tag=$TAG" >> "$GITHUB_OUTPUT"
-          echo "Publicando tag: $TAG"
+          echo "Publicando TAG=$TAG"
 
-      - name: Sincronizar version de pyproject.toml con TAG
-        shell: bash
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Build sdist & wheel
         run: |
-          python - <<'PY'
-          import os, re, pathlib
-          tag = os.environ["TAG"].lstrip('v')
-          p = pathlib.Path("pyproject.toml")
-          t = p.read_text()
-          t = re.sub(r'(?m)^(\s*version\s*=\s*")\d+\.\d+\.\d+(")', rf"\1{tag}\2", t)
-          p.write_text(t)
-          print("Set version ->", tag)
-          PY
+          python -m pip install -U pip build
+          python -m build
 
-      # Build & push GHCR
-      - name: Set IMAGE
-        run: echo "IMAGE=ghcr.io/${GITHUB_REPOSITORY,,}" >> "$GITHUB_ENV"
+      - name: Publish to PyPI (OIDC)
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          packages-dir: dist
+          skip-existing: true
 
-      - uses: docker/setup-qemu-action@v3
-      - uses: docker/setup-buildx-action@v3
-      - uses: docker/login-action@v3
+      - name: Login GHCR
+        uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build & Push container
-        uses: docker/build-push-action@v6
+      - name: Setup Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build & Push image
+        uses: docker/build-push-action@v5
         with:
           context: .
-          file: ./Dockerfile
-          platforms: linux/amd64
           push: true
-          provenance: false
-          tags: ${{ env.IMAGE }}:${{ steps.tag.outputs.tag }},${{ env.IMAGE }}:latest
-
-      # Build & publish PyPI (OIDC)
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.12"
-
-      - name: Build sdist/wheel
-        run: |
-          python -m pip install -U pip build
-          python -m build
-
-      - name: Publish to PyPI (Trusted Publisher)
-        uses: pypa/gh-action-pypi-publish@release/v1
-        with:
-          skip-existing: true
-          verbose: true
-        env:
-          PYTHON_KEYRING_BACKEND: keyring.backends.null.Keyring
+          tags: ghcr.io/${{ github.repository }}:${{ env.TAG }}
+          platforms: linux/amd64