diff --git a/ruby-4.0.yaml b/ruby-4.0.yaml
new file mode 100644
index 00000000000..aa2e8c8fe99
--- /dev/null
+++ b/ruby-4.0.yaml
@@ -0,0 +1,189 @@
+package:
+  name: ruby-4.0
+  version: "4.0.0"
+  epoch: 0
+  description: "the Ruby programming language"
+  copyright:
+    - license: Ruby
+    - license: BSD-2-Clause
+  dependencies:
+    provides:
+      - ruby=${{package.full-version}}
+      # These are bundled gems
+      - ruby${{vars.ruby-major-version}}-csv
+      - ruby${{vars.ruby-major-version}}-base64
+      - ruby${{vars.ruby-major-version}}-drb
+    runtime:
+      - glibc
+      - gmp
+      - libgcc
+      - yaml
+      - zlib
+
+environment:
+  contents:
+    packages:
+      - autoconf
+      - build-base
+      - busybox
+      - ca-certificates-bundle
+      - coreutils
+      - expat-dev
+      - gcc-14-default
+      - gdbm-dev
+      - glibc-dev
+      - gmp-dev
+      - graphviz
+      - jemalloc-dev
+      - libffi-dev
+      - libxcrypt-dev
+      - linux-headers
+      - mpdecimal-dev
+      - ncurses-dev
+      - oniguruma-dev
+      - openssl-dev
+      - pkgconf
+      - readline-dev
+      - ruby-3.4
+      - rust
+      - tk-dev
+      - yaml-dev
+      - zlib-dev
+
+vars:
+  prefix: /usr
+
+var-transforms:
+  - from: ${{package.version}}
+    match: (\d+\.\d+).*
+    replace: $1
+    to: ruby-major-version
+
+pipeline:
+  - uses: git-checkout
+    with:
+      repository: https://github.com/ruby/ruby
+      tag: v${{package.version}}
+      expected-commit: 553f1675f3a9cece340b90f374a4245dccac2272
+
+  - uses: patch
+    with:
+      patches: remove-already-provided-gems-from-gems_bundled_gems.patch
+
+  - name: Generate and Configure
+    runs: |
+      ./autogen.sh
+      ./configure \
+         --host=${{host.triplet.gnu}} \
+         --build=${{host.triplet.gnu}} \
+         --target=${{host.triplet.gnu}} \
+         --prefix=${{vars.prefix}} \
+         --enable-shared \
+         --disable-rpath \
+         --sysconfdir=/etc \
+         --enable-mkmf-verbose \
+         --enable-yjit \
+         --with-jemalloc
+
+  - uses: autoconf/make
+
+  # Update and Extract bundled gems
+  - uses: autoconf/make
+    with:
+      opts: update-gems extract-gems
+
+  # Build documentation
+  - uses: autoconf/make
+    with:
+      opts: rdoc capi
+
+  - uses: autoconf/make-install
+
+  - runs: |
+      # Ignore the patch version of ruby since ruby will install under the
+      # version of the latest standard library. Should produce the string 4.0.*
+      RUBYWILD="${{vars.ruby-major-version}}.*"
+
+      RUBYDIR=${{targets.destdir}}${{vars.prefix}}/lib/ruby/$RUBYWILD
+      rm -rf ${RUBYDIR}/bundler
+      rm -f ${RUBYDIR}/bundler.rb
+
+      GEMDIR=${{targets.destdir}}${{vars.prefix}}/lib/ruby/gems/$RUBYWILD
+      rm -rf ${GEMDIR}/gems/bundler-*
+      rm -f ${GEMDIR}/specifications/default/bundler-*.gemspec
+
+      rm -f ${{targets.destdir}}/usr/bin/bundle \
+         ${{targets.destdir}}/usr/bin/bundler
+
+  - runs: |
+      find ${{targets.destdir}} -name 'mkmf.log' -exec rm {} \;
+
+subpackages:
+  - name: "ruby-${{vars.ruby-major-version}}-doc"
+    description: "ruby documentation"
+    pipeline:
+      - uses: split/manpages
+      - runs: |
+          mkdir -p "${{targets.subpkgdir}}"/usr/share
+          mv "${{targets.destdir}}"/usr/share/doc "${{targets.subpkgdir}}"/usr/share/
+          mv "${{targets.destdir}}"/usr/share/ri "${{targets.subpkgdir}}"/usr/share/
+    test:
+      pipeline:
+        - uses: test/docs
+
+  - name: "ruby-${{vars.ruby-major-version}}-dev"
+    description: "ruby development headers"
+    dependencies:
+      runtime:
+        - jemalloc-dev
+    pipeline:
+      - uses: split/dev
+    test:
+      pipeline:
+        - uses: test/pkgconf
+        - uses: test/tw/ldd-check
+
+update:
+  enabled: true
+  version-transform:
+    - match: "_"
+      replace: .
+  github:
+    identifier: ruby/ruby
+    strip-prefix: v
+    use-tag: true
+    tag-filter-prefix: v4_0_
+
+test:
+  environment:
+    contents:
+      packages:
+        - ruby${{vars.ruby-major-version}}-bundler
+  pipeline:
+    - name: Test binaries
+      runs: |
+        ruby --version | grep ${{package.version}}
+
+        cat <<EOF >> /tmp/hello.rb
+        puts("Hello Wolfi!")
+        EOF
+
+        ruby /tmp/hello.rb
+    - name: Validate HTTPS support
+      runs: |
+        bundle init
+        OUTPUT=$(bundle doctor --ssl 2>&1)
+        echo "$OUTPUT"
+        if echo "$OUTPUT" | grep -i "failed"; then
+          exit 1
+        fi
+    - uses: test/tw/help-check
+      with:
+        bins: |
+          gem
+          irb
+          rake
+          rdbg
+          rdoc
+          ri
+          ruby
diff --git a/ruby-4.0/remove-already-provided-gems-from-gems_bundled_gems.patch b/ruby-4.0/remove-already-provided-gems-from-gems_bundled_gems.patch
new file mode 100644
index 00000000000..adaa723e7b7
--- /dev/null
+++ b/ruby-4.0/remove-already-provided-gems-from-gems_bundled_gems.patch
@@ -0,0 +1,26 @@
+From ada5fb811e09dfe78f3f8bcdf265b94d1dced97c Mon Sep 17 00:00:00 2001
+From: Batuhan Apaydin <batuhan.apaydin@chainguard.dev>
+Date: Fri, 16 May 2025 20:03:12 +0300
+Subject: [PATCH]  Remove modules from bundled gems list to avoid unnecessary
+ duplication.
+
+Signed-off-by: Batuhan Apaydin <batuhan.apaydin@chainguard.dev>
+---
+ gems/bundled_gems | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/gems/bundled_gems b/gems/bundled_gems
+index a5286d5..d4f50fa 100644
+--- a/gems/bundled_gems
++++ b/gems/bundled_gems
+@@ -10,10 +10,8 @@ minitest            6.0.0  https://github.com/minitest/minitest
+ power_assert        3.0.1   https://github.com/ruby/power_assert
+ rake                13.3.1  https://github.com/ruby/rake
+ test-unit           3.7.5   https://github.com/test-unit/test-unit
+-rexml               3.4.4   https://github.com/ruby/rexml
+ rss                 0.3.2   https://github.com/ruby/rss
+ net-ftp             0.3.9   https://github.com/ruby/net-ftp
+-net-imap            0.6.2   https://github.com/ruby/net-imap
+ net-pop             0.1.2   https://github.com/ruby/net-pop
+ net-smtp            0.5.1   https://github.com/ruby/net-smtp
+ matrix              0.4.3   https://github.com/ruby/matrix
diff --git a/ruby4.0-bundler.yaml b/ruby4.0-bundler.yaml
new file mode 100644
index 00000000000..2de81e4f751
--- /dev/null
+++ b/ruby4.0-bundler.yaml
@@ -0,0 +1,91 @@
+package:
+  name: ruby4.0-bundler
+  version: "4.0.3"
+  epoch: 0
+  description: "Manage an application's gem dependencies"
+  copyright:
+    - license: MIT
+  dependencies:
+    runtime:
+      - ruby-${{vars.rubyMM}}
+
+environment:
+  contents:
+    packages:
+      - bash
+      - build-base
+      - busybox
+      - ca-certificates-bundle
+      - ruby-${{vars.rubyMM}}
+      - ruby-${{vars.rubyMM}}-dev
+
+vars:
+  gem: bundler
+
+pipeline:
+  - uses: git-checkout
+    with:
+      expected-commit: 28c66ecc1e6c283156eba82504ef6e7168665813
+      repository: https://github.com/rubygems/rubygems
+      tag: bundler-v${{package.version}}
+
+  - working-directory: ${{vars.gem}}
+    pipeline:
+      - uses: ruby/build
+        with:
+          gem: ${{vars.gem}}
+      - uses: ruby/install
+        with:
+          gem: ${{vars.gem}}
+          version: ${{package.version}}
+      - uses: ruby/clean
+      - name: build-docs-clean
+        runs: |
+          export INSTALL_DIR=${{targets.destdir}}/$(ruby -e 'puts Gem.default_dir')
+          for n in 1 5; do
+            mkdir -p "${{targets.destdir}}"/usr/share/man/man$n
+            mv "$INSTALL_DIR"/gems/bundler-${{package.version}}/lib/bundler/man/*.$n "${{targets.destdir}}"/usr/share/man/man$n/
+          done
+
+          rm -rf "$INSTALL_DIR"/cache \
+                 "$INSTALL_DIR"/build_info \
+                 "$INSTALL_DIR"/doc \
+                 "$INSTALL_DIR"/gems/bundler-${{package.version}}/man \
+                 "$INSTALL_DIR"/gems/bundler-${{package.version}}/*.md
+
+subpackages:
+  - name: "${{package.name}}-doc"
+    description: "ruby-bundler documentation"
+    pipeline:
+      - uses: split/manpages
+    test:
+      pipeline:
+        - uses: test/docs
+
+update:
+  enabled: true
+  github:
+    identifier: rubygems/rubygems
+    strip-prefix: bundler-v
+    tag-filter: bundler-v
+
+test:
+  pipeline:
+    # AUTOGENERATED
+    - runs: |
+        bundle --version
+        bundler --version
+        bundle --help
+        bundler --help
+    - runs: |
+        echo "source 'https://rubygems.org'" > Gemfile
+        echo "gem 'rake'" >> Gemfile
+        bundle install
+        bundle list
+        echo "Bundler test passed!"
+
+var-transforms:
+  - from: ${{package.name}}
+    match: ^ruby(\d\.\d+)-.*
+    replace: $1
+    to: rubyMM