diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index fe05823e6..c53dcbbc0 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -5,15 +5,32 @@ name: Upload Python Package
 
 on:
   workflow_dispatch:
-  release:
-    types: [published]
+  push:
+    branches:
+      - v1
 
 env:
   IMAGE_NAME: cloudbees/launchable
 
 jobs:
+  tagpr:
+    permissions:
+      actions: write
+      contents: write
+      pull-requests: write
+    runs-on: ubuntu-latest
+    outputs:
+      tag: ${{ steps.run-tagpr.outputs.tag }}
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - id: run-tagpr
+        uses: Songmu/tagpr@da82ed6743aec90049892070edd5561335904a9e # v1.17.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
   pypi:
-    if: github.event_name != 'release' || startsWith(github.event.release.tag_name, 'v1')
+    needs: tagpr
+    if: needs.tagpr.outputs.tag != '' || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
@@ -50,9 +67,10 @@ jobs:
         env:
           DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
         with:
-          args: "Launchable CLI ${{ github.event.release.tag_name }} is released! ${{ github.event.release.html_url }}"
+          args: "Launchable CLI ${{ needs.tagpr.outputs.tag }} is released! https://github.com/${{ github.repository }}/releases/tag/${{ needs.tagpr.outputs.tag }}"
   docker:
-    if: github.event_name != 'release' || startsWith(github.event.release.tag_name, 'v1')
+    needs: tagpr
+    if: needs.tagpr.outputs.tag != '' || github.event_name == 'workflow_dispatch'
     name: Push Docker image to Docker Hub
     runs-on: ubuntu-22.04
     permissions:
@@ -81,7 +99,7 @@ jobs:
           file: ./Dockerfile
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: ${{ env.IMAGE_NAME }}:${{ github.event.release.tag_name }}
+          tags: ${{ env.IMAGE_NAME }}:${{ needs.tagpr.outputs.tag }}
 
       - name: Generate artifact attestation
         uses: actions/attest-build-provenance@e8998f949152b193b063cb0ec769d69d929409be # v2.4.0
diff --git a/.tagpr b/.tagpr
index a508ee580..830d7a252 100644
--- a/.tagpr
+++ b/.tagpr
@@ -41,3 +41,4 @@
 	releaseBranch = v1
 	versionFile = -
 	changelog = false
+	fixedMajorVersion = v1
diff --git a/README.md b/README.md
index d613e0d4c..f143ee383 100644
--- a/README.md
+++ b/README.md
@@ -44,17 +44,8 @@ pipenv install --dev some-what-module
 
 # How to release
 
-1. Create a new tag for the next release locally
-
-```sh
-git checkout v1
-git pull
-git tag v1.xx.yy
-git push origin --tags
-```
-
-2. Create new release on Github, then Github Actions automatically uploads the
-module to PyPI.
+[tagpr](https://github.com/Songmu/tagpr) creates a release pull request automatically when changes are pushed to the `v1` branch.
+Merge the release pull request, then GitHub Actions automatically tags, creates a GitHub Release, and uploads the module to PyPI.
 
 ## How to update launchable/jar/exe_deploy.jar