diff --git a/.github/workflows/publish-gem.yml b/.github/workflows/publish-gem.yml
new file mode 100644
index 00000000..9ece656d
--- /dev/null
+++ b/.github/workflows/publish-gem.yml
@@ -0,0 +1,22 @@
+name: Publish Gem
+
+on:
+  release:
+    types: [released]
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.3"
+      - name: Build gem
+        run: |
+          gem build github-pages.gemspec
+      - name: Publish
+        run: |
+          gem push github-pages.gem --key ${{ secrets.PAGES_GEM_PUBLISH }}
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 8ebfb0cb..ffb1ee7f 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -7,8 +7,8 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - 2.6
-          - 2.7
+          - '3.0'
+          - '3.3'
     steps:
     - uses: actions/checkout@v4
     - name: script/cibuild-docker
diff --git a/.rubocop.yml b/.rubocop.yml
index fbcea5f9..9cbf940c 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -23,7 +23,7 @@ require:
   - rubocop-performance
 
 AllCops:
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 3.0
   Exclude:
     - 'bin/**/*'
     - 'script/**/*'
diff --git a/.ruby-version b/.ruby-version
index 2c9b4ef4..eb39e538 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.7.3
+3.3
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 1b620224..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-language: ruby
-rvm:
-  - 2.5
-  - 2.6
-  - 2.7
-
-branches:
-  only:
-    - master
-
-before_install:
-  - gem update --system
-  - gem install bundler
-script: "script/cibuild"
-env:
-  global:
-  - NOKOGIRI_USE_SYSTEM_LIBRARIES=true
-
-notifications:
-  email: false
-
-cache: bundler
diff --git a/Dockerfile b/Dockerfile
index 6b84ef29..f0746a25 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG RUBY_VERSION=2.7.3
+ARG RUBY_VERSION=3.3
 FROM ruby:$RUBY_VERSION
 
 RUN apt-get update \
@@ -8,6 +8,7 @@ RUN apt-get update \
     make \
     nodejs
 
+# final version for rubygems-update to supoprt ruby 2.7, consider removing this after upgraded to ruby 3.0
 RUN gem update --system
 
 COPY .git /src/gh/pages-gem/.git
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index 3c572c2f..aea69e92 100644
--- a/Dockerfile.alpine
+++ b/Dockerfile.alpine
@@ -1,4 +1,4 @@
-FROM ruby:2.7.3-alpine
+FROM ruby:3.3-alpine
 
 RUN apk update && apk add --no-cache \
   git
diff --git a/Gemfile b/Gemfile
index 464ed458..31363899 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gemspec
 gem "jekyll-octicons"
 
 group :test do
-  gem "rubocop", "~> 0.79"
+  gem "rubocop", "~> 1.37"
   gem "rubocop-performance"
   gem "webmock"
 end
diff --git a/github-pages.gemspec b/github-pages.gemspec
index 3602f4f8..dacbb09f 100644
--- a/github-pages.gemspec
+++ b/github-pages.gemspec
@@ -30,5 +30,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency("jekyll_test_plugin_malicious", "~> 0.2")
   s.add_development_dependency("pry", "~> 0.10")
   s.add_development_dependency("rspec", "~> 3.3")
-  s.add_development_dependency("rubocop-github", "0.16.0")
+  s.add_development_dependency("rubocop-github", "0.20.0")
 end
diff --git a/lib/github-pages/dependencies.rb b/lib/github-pages/dependencies.rb
index dba5cc26..ad782395 100644
--- a/lib/github-pages/dependencies.rb
+++ b/lib/github-pages/dependencies.rb
@@ -7,7 +7,7 @@ module GitHubPages
   class Dependencies
     VERSIONS = {
       # Jekyll
-      "jekyll" => "3.9.3",
+      "jekyll" => "3.9.4",
       "jekyll-sass-converter" => "1.5.2",
 
       # Converters
@@ -63,7 +63,7 @@ def self.version_report
       require "nokogiri"
 
       {
-        "ruby" => RUBY_VERSION,
+        "ruby" => "3.3",
 
         # Gem versions we're curious about
         "github-pages" => VERSION.to_s,
diff --git a/script/cibuild-docker b/script/cibuild-docker
index 7a6ca87d..374ac15e 100755
--- a/script/cibuild-docker
+++ b/script/cibuild-docker
@@ -2,8 +2,5 @@
 
 set -ex
 
-# Set the ruby version in the Action definition matrix.
-: "${RUBY_VERSION:="2.7.3"}"
-
-docker build --build-arg "RUBY_VERSION=$RUBY_VERSION" -t github-pages .
+docker build -t github-pages .
 docker run --rm --workdir /src/gh/pages-gem github-pages script/cibuild