diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
index e3174ae..c8e4d05 100644
--- a/.github/workflows/build-release.yml
+++ b/.github/workflows/build-release.yml
@@ -31,10 +31,16 @@ jobs:
           BODY="${BODY//$'\n'/'%0A'}"
           BODY="${BODY//$'\r'/'%0D'}"
           echo "::set-output name=body::$BODY"
+          # Add pre-release option if tag name has any suffix after vMAJOR.MINOR.PATCH
+          if [[ ${GITHUB_REF#refs/tags/} =~ ^v[0-9]+\.[0-9]+\.[0-9]+.+ ]]; then
+            echo ::set-output name=prerelease::true
+          fi
       - name: Build gem
         run: gem build
+      - name: Calculate checksums
+        run: sha256sum yabeda-puma-plugin-${{ steps.tag.outputs.version }}.gem > SHA256SUM
       - name: Check version
-        run: ls yabeda-puma-plugin-${{ steps.tag.outputs.version }}.gem
+        run: ls -l yabeda-puma-plugin-${{ steps.tag.outputs.version }}.gem
       - name: Create Release
         id: create_release
         uses: actions/create-release@v1
@@ -45,9 +51,8 @@ jobs:
           release_name: ${{ steps.tag.outputs.subject }}
           body: ${{ steps.tag.outputs.body }}
           draft: false
-          prerelease: false
-      - name: Upload Release Asset
-        id: upload-release-asset
+          prerelease: ${{ steps.tag.outputs.prerelease }}
+      - name: Upload built gem as release asset
         uses: actions/upload-release-asset@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -56,3 +61,22 @@ jobs:
           asset_path: yabeda-puma-plugin-${{ steps.tag.outputs.version }}.gem
           asset_name: yabeda-puma-plugin-${{ steps.tag.outputs.version }}.gem
           asset_content_type: application/x-tar
+      - name: Upload checksums as release asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: SHA256SUM
+          asset_name: SHA256SUM
+          asset_content_type: text/plain
+      - name: Publish to GitHub packages
+        env:
+          GEM_HOST_API_KEY: Bearer ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gem push yabeda-puma-plugin-${{ steps.tag.outputs.version }}.gem --host https://rubygems.pkg.github.com/${{ github.repository_owner }}
+      - name: Publish to RubyGems
+        env:
+          GEM_HOST_API_KEY: "${{ secrets.RUBYGEMS_API_KEY }}"
+        run: |
+          gem push yabeda-puma-plugin-${{ steps.tag.outputs.version }}.gem
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5e40ae2..62fc1a8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,6 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          - ruby: 3.0
           - ruby: 2.7
           - ruby: 2.6
           - ruby: 2.5
diff --git a/README.md b/README.md
index fe5c464..02b726c 100644
--- a/README.md
+++ b/README.md
@@ -134,6 +134,38 @@ docker-compose run app bundle exec rspec
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/yabeda-rb/yabeda-puma-plugin.
 
+### Releasing
+
+1. Bump version number in `lib/yabeda/puma/plugin/version.rb`
+
+   In case of pre-releases keep in mind [rubygems/rubygems#3086](https://github.com/rubygems/rubygems/issues/3086) and check version with command like `Gem::Version.new(Yabeda::VERSION).to_s`
+
+2. Fill `CHANGELOG.md` with missing changes, add header with version and date.
+
+3. Make a commit:
+
+   ```sh
+   git add lib/yabeda/puma/plugin/version.rb CHANGELOG.md
+   version=$(ruby -r ./lib/yabeda/puma/plugin/version.rb -e "puts Gem::Version.new(Yabeda::Puma::Plugin::VERSION)")
+   git commit --message="${version}: " --edit
+   ```
+
+4. Create annotated tag:
+
+   ```sh
+   git tag v${version} --annotate --message="${version}: " --edit --sign
+   ```
+
+5. Fill version name into subject line and (optionally) some description (list of changes will be taken from changelog and appended automatically)
+
+6. Push it:
+
+   ```sh
+   git push --follow-tags
+   ```
+
+7. GitHub Actions will create a new release, build and push gem into RubyGems! You're done!
+
 ## License
 
 The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).