diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 0fffd2a..d0bd0b7 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -35,7 +35,7 @@ jobs:
         uses: stefanzweifel/git-auto-commit-action@v5
         if: always()
         with:
-          commit_message: Run format
+          commit_message: 'ci: Format code'
           commit_user_name: ${{ secrets.GIT_USER_NAME }}
           commit_user_email: ${{ secrets.GIT_USER_EMAIL }}
           commit_author: ${{ secrets.GIT_USER_NAME }} <${{ secrets.GIT_USER_EMAIL }}>
diff --git a/.github/workflows/generate.yml b/.github/workflows/generate.yml
index e2fd5ab..b38c9d0 100644
--- a/.github/workflows/generate.yml
+++ b/.github/workflows/generate.yml
@@ -36,7 +36,7 @@ jobs:
       - name: Commit
         uses: stefanzweifel/git-auto-commit-action@v5
         with:
-          commit_message: Generate code
+          commit_message: 'ci: Generate code'
           commit_user_name: ${{ secrets.GIT_USER_NAME }}
           commit_user_email: ${{ secrets.GIT_USER_EMAIL }}
           commit_author: ${{ secrets.GIT_USER_NAME }} <${{ secrets.GIT_USER_EMAIL }}>
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 9acb18a..75fb59e 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -20,11 +20,21 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: Download artifact
         uses: actions/download-artifact@v4
         with:
           name: ${{ needs.build.outputs.artifact_name }}
           path: pkg/
+      - name: Generate release notes
+        id: changelog
+        run: |
+          mkdir tmp
+          outfile=tmp/changelog.txt
+          echo "outfile=${outfile}" >> $GITHUB_OUTPUT
+          npx standard-changelog@^2.0.0 --release-count 2 --infile $outfile.tmp --outfile $outfile.tmp
+          sed '1,3d' $outfile.tmp > $outfile
       - name: Create GitHub release
         uses: softprops/action-gh-release@v2
         with:
@@ -32,6 +42,7 @@ jobs:
           fail_on_unmatched_files: true
           prerelease: ${{ contains(github.ref_name, 'pre') }}
           files: pkg/*
+          body_path: ${{ github.workspace }}/${{ steps.changelog.outputs.outfile }}
   rubygems:
     name: RubyGems.org
     uses: ./.github/workflows/_publish.yml
diff --git a/.github/workflows/semantic-release.yml b/.github/workflows/semantic-release.yml
new file mode 100644
index 0000000..20a1f4f
--- /dev/null
+++ b/.github/workflows/semantic-release.yml
@@ -0,0 +1,49 @@
+---
+name: Semantic Release
+
+run-name: Semantic Release from ${{ github.ref_name }}
+
+on:
+  push:
+    branches:
+      - '**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}
+  cancel-in-progress: true
+
+jobs:
+  semantic:
+    name: Determine version
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    outputs:
+      new_release_published: ${{ steps.release.outputs.new_release_published }}
+      new_release_version: ${{ steps.release.outputs.new_release_version }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Semantic release
+        id: release
+        uses: cycjimmy/semantic-release-action@v4
+        with:
+          dry_run: true
+  release:
+    name: Release version
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    needs: semantic
+    if: needs.semantic.outputs.new_release_published == 'true' && needs.semantic.outputs.new_release_version != '1.0.0'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+      - name: Release version ${{ needs.semantic.outputs.new_release_version }} on ${{ github.ref_name }}
+        run: gh workflow run version.yml --raw-field version=$VERSION --ref $BRANCH
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+          VERSION: ${{ needs.semantic.outputs.new_release_version }}
+          BRANCH: ${{ github.ref_name }}
diff --git a/.releaserc.json b/.releaserc.json
new file mode 100644
index 0000000..bd9c6e5
--- /dev/null
+++ b/.releaserc.json
@@ -0,0 +1,11 @@
+{
+  "branches": [
+    "+([0-9])?(.{+([0-9]),x}).x",
+    "main",
+    "next",
+    "next-major",
+    { "name": "beta", "prerelease": true },
+    { "name": "alpha", "prerelease": true }
+  ],
+  "plugins": ["@semantic-release/commit-analyzer"]
+}
diff --git a/README.md b/README.md
index ca639bc..366d335 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,8 @@ Bootstrap a new Ruby gem in five minutes or less.
 - [Standard] Ruby style guide, linter, and formatter.
 - Productive and fun testing with [RSpec].
 - Code coverage reporting with [SimpleCov].
-- Continuous testing and gem publishing with [GitHub Actions].
+- Fully automated version management and package publishing with [semantic-release].
+- Continuous checks and tests with [GitHub Actions].
 - [Keep a CHANGELOG].
 - Consistent coding with [EditorConfig].
 - Badges from [Shields.io].
@@ -32,6 +33,7 @@ Bootstrap a new Ruby gem in five minutes or less.
 [rspec]: https://rspec.info/
 [ruby]: https://www.ruby-lang.org/
 [rubygems.org]: https://rubygems.org/
+[semantic-release]: https://semantic-release.gitbook.io/semantic-release/
 [shields.io]: https://shields.io/
 [simplecov]: https://github.com/simplecov-ruby/simplecov
 [standard]: https://github.com/testdouble/standard
@@ -192,7 +194,7 @@ These must be set manually.
 
 ### Secrets for Optional GitHub Actions
 
-The version and format GitHub actions
+The version, format, generate, and semantic-release GitHub actions
 require a user with write access to the repository.
 Set these additional secrets to enable the action:
 
diff --git a/makenew.sh b/makenew.sh
index caa693a..6dc28e0 100755
--- a/makenew.sh
+++ b/makenew.sh
@@ -58,7 +58,7 @@ makenew () {
   read -p '> GitHub user or organization name (my-user): ' mk_user
   read -p '> GitHub repository name (my-repo): ' mk_repo
 
-  sed_delete README.md '10,98d'
+  sed_delete README.md '10,100d'
   sed_insert README.md '10i' 'TODO'
 
   find_replace "s/^  \"VERSION\" = \".*\"/  \"VERSION\" = \"0.0.0\"/g"