diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
new file mode 100644
index 0000000..a444fee
--- /dev/null
+++ b/.github/workflows/ruby.yml
@@ -0,0 +1,85 @@
+name: Build, package, and upload Ruby gem
+
+on:
+  create:
+    tags:
+      - 'v*'
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        include:
+          - os: ubuntu-latest
+            NAME: linux
+            FILE: 'libhyperbuild_ruby_lib.so'
+          - os: windows-latest
+            NAME: windows
+            FILE: 'hyperbuild_ruby_lib.dll'
+          - os: macos-latest
+            NAME: macos
+            FILE: 'libhyperbuild_ruby_lib.dylib'
+    steps:
+      - uses: actions/checkout@v1
+      - name: Get version
+        id: version
+        shell: bash
+        run: echo ::set-output name=VERSION::${GITHUB_REF#refs/tags/v}
+      - name: Set up Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          default: true
+      - name: Build Ruby native library
+        run: cargo build --release
+        working-directory: ./ruby
+      - name: Upload built library
+        uses: actions/upload-artifact@v1
+        with:
+          name: ${{ matrix.NAME }}
+          path: ./ruby/target/release/${{ matrix.FILE }}
+  package:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v1
+      - name: Get version
+        id: version
+        shell: bash
+        run: echo ::set-output name=VERSION::${GITHUB_REF#refs/tags/v}
+      - name: Get file name
+        id: file
+        shell: bash
+        run: echo ::set-output name=FILE::${{ steps.version.outputs.VERSION }}.jar
+      - name: Set up JDK
+        uses: actions/setup-ruby@v1
+        with:
+          ruby-version: '2.5'
+      - name: Download Windows built library
+        uses: actions/download-artifact@v1
+        with:
+          name: windows
+          path: ruby/lib
+      - name: Download Linux built library
+        uses: actions/download-artifact@v1
+        with:
+          name: linux
+          path: ruby/lib
+      - name: Download macOS built library
+        uses: actions/download-artifact@v1
+        with:
+          name: macos
+          path: ruby/lib
+      - name: Package gem
+        working-directory: ./ruby
+        run: gem build hyperbuild.gemspec
+      - uses: chrislennon/action-aws-cli@v1.1
+      - name: Upload to S3
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          AWS_REGION: us-west-2
+        run: aws s3 cp ./ruby/hyperbuild-${{ steps.version.outputs.VERSION }}.gem s3://${{ secrets.AWS_S3_BUCKET }}/hyperbuild/bin/${{ steps.version.outputs.VERSION }}.gem
diff --git a/Cargo.toml b/Cargo.toml
index 717f93e..d71f2a6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hyperbuild"
-description = "One-pass in-place HTML minifier written in Rust with context-aware whitespace handling"
+description = "Fast one-pass in-place HTML minifier written in Rust with context-aware whitespace handling"
 license = "MIT"
 homepage = "https://github.com/wilsonzlin/hyperbuild"
 readme = "README.md"
diff --git a/README.md b/README.md
index d635ad4..00e6852 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ A fast one-pass in-place HTML minifier written in Rust with context-aware whites
 Available as:
 - CLI for Windows, macOS, and Linux.
 - Rust library.
-- Native library for Node.js, Python, and Java.
+- Native library for Node.js, Python, Java, and Ruby.
 
 ## Features
 
@@ -140,6 +140,25 @@ minified = hyperbuild.minify("<p>  Hello, world!  </p>")
 
 </details>
 
+<details>
+<summary><strong>Ruby</strong></summary>
+
+hyperbuild is available as a [native module](https://github.com/danielpclark/rutie), and supports Ruby versions 2.5 and higher.
+
+##### Get
+
+Download and install the [gem](https://wilsonl.in/hyperbuild/bin/0.0.20.gem).
+
+##### Use
+
+```ruby
+require 'hyperbuild'
+
+print hyperbuild.minify "<p>  Hello, world!  </p>"
+```
+
+</details>
+
 ## Minification
 
 ### Whitespace
diff --git a/java/pom.xml b/java/pom.xml
index c35eaef..58d524d 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -9,7 +9,7 @@
     <version>0.0.20</version>
 
     <name>hyperbuild</name>
-    <description>One-pass in-place HTML minifier written in Rust with context-aware whitespace handling</description>
+    <description>Fast one-pass in-place HTML minifier written in Rust with context-aware whitespace handling</description>
     <developers>
         <developer>
             <name>Wilson Lin</name>
diff --git a/nodejs/package.json b/nodejs/package.json
index f52e7ed..d98a57f 100644
--- a/nodejs/package.json
+++ b/nodejs/package.json
@@ -1,7 +1,7 @@
 {
   "name": "hyperbuild",
   "version": "0.0.20",
-  "description": "One-pass in-place HTML minifier written in Rust with context-aware whitespace handling",
+  "description": "Fast one-pass in-place HTML minifier written in Rust with context-aware whitespace handling",
   "main": "lib/index.js",
   "repository": {
     "type": "git",
diff --git a/ruby/.gitignore b/ruby/.gitignore
new file mode 100644
index 0000000..8b459a8
--- /dev/null
+++ b/ruby/.gitignore
@@ -0,0 +1,3 @@
+/Cargo.lock
+/Gemfile.lock
+/target
diff --git a/ruby/Cargo.toml b/ruby/Cargo.toml
new file mode 100644
index 0000000..754b2e5
--- /dev/null
+++ b/ruby/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "hyperbuild-ruby"
+publish = false
+version = "0.0.20"
+authors = ["Wilson Lin <code@wilsonl.in>"]
+edition = "2018"
+
+[lib]
+name = "hyperbuild_ruby_lib"
+crate-type = ["cdylib"]
+
+[dependencies]
+hyperbuild = "0.0.20"
+rutie = "0.7.0"
diff --git a/ruby/Gemfile b/ruby/Gemfile
new file mode 100644
index 0000000..b4e2a20
--- /dev/null
+++ b/ruby/Gemfile
@@ -0,0 +1,3 @@
+source "https://rubygems.org"
+
+gemspec
diff --git a/ruby/hyperbuild.gemspec b/ruby/hyperbuild.gemspec
new file mode 100644
index 0000000..6a88f79
--- /dev/null
+++ b/ruby/hyperbuild.gemspec
@@ -0,0 +1,16 @@
+require 'rake'
+
+Gem::Specification.new do |spec|
+  spec.name          = "hyperbuild"
+  spec.version       = "0.0.20"
+  spec.authors       = ["Wilson Lin"]
+  spec.email         = ["code@wilsonl.in"]
+  spec.license       = "MIT"
+  spec.files         = FileList["lib/*"].to_a
+  spec.summary       = "Fast one-pass in-place HTML minifier written in Rust with context-aware whitespace handling"
+  spec.homepage      = "https://github.com/wilsonzlin/hyperbuild"
+
+  spec.require_paths = ["lib"]
+
+  spec.add_dependency "fiddle", "~> 1.0"
+end
diff --git a/ruby/lib/hyperbuild.rb b/ruby/lib/hyperbuild.rb
new file mode 100644
index 0000000..c843872
--- /dev/null
+++ b/ruby/lib/hyperbuild.rb
@@ -0,0 +1,18 @@
+require 'fiddle'
+
+class HyperbuildLoader
+  def self.operating_system
+    case RbConfig::CONFIG['host_os'].downcase
+    when /linux|bsd|solaris/ then 'linux'
+    when /darwin/ then 'macos'
+    when /mingw|mswin/ then 'windows'
+    else 'unknown'
+    end
+  end
+
+  def self.lib_path
+    File.join(__dir__, operating_system)
+  end
+end
+
+Fiddle::Function.new(Fiddle.dlopen(HyperbuildLoader.lib_path)['Init_hyperbuild'], [], Fiddle::TYPE_VOIDP).call
diff --git a/ruby/src/lib.rs b/ruby/src/lib.rs
new file mode 100644
index 0000000..df5f5c3
--- /dev/null
+++ b/ruby/src/lib.rs
@@ -0,0 +1,31 @@
+use hyperbuild::hyperbuild as hyperbuild_native;
+use rutie::{Class, class, methods, Object, RString, VM};
+use std::str::from_utf8_unchecked;
+
+class!(Hyperbuild);
+
+methods! {
+    Hyperbuild,
+    _itself,
+
+    fn minify(source: RString) -> RString {
+        let mut code = source
+            .map_err(|e| VM::raise_ex(e) )
+            .unwrap()
+            .to_string()
+            .into_bytes();
+
+        hyperbuild_native(&mut code)
+            .map_err(|(err, pos)| VM::raise(Class::from_existing("SyntaxError"), format!("{} [Character {}]", err.message(), pos).as_str()))
+            .map(|out_len| RString::new_utf8(unsafe { from_utf8_unchecked(&code[0..out_len]) }))
+            .unwrap()
+    }
+}
+
+#[allow(non_snake_case)]
+#[no_mangle]
+pub extern "C" fn Init_hyperbuild() {
+    Class::new("Hyperbuild", None).define(|itself| {
+        itself.def_self("minify", minify);
+    });
+}
diff --git a/version b/version
index a7ec279..19d18dc 100755
--- a/version
+++ b/version
@@ -48,11 +48,11 @@ if (cmd('git', 'status', '--porcelain', {throwOnStderr: true, captureStdio: true
   throw new Error(`Working directory not clean`);
 }
 
-for (const f of ["Cargo.toml", "nodejs/native/Cargo.toml", "java/Cargo.toml", "python/Cargo.toml"]) {
+for (const f of ["Cargo.toml", "nodejs/native/Cargo.toml", "java/Cargo.toml", "python/Cargo.toml", "ruby/Cargo.toml"]) {
   replaceInFile(f, /^version = "\d+\.\d+\.\d+"\s*$/m, `version = "${NEW_VERSION}"`);
 }
 
-for (const f of ["README.md", "nodejs/native/Cargo.toml", "java/Cargo.toml", "python/Cargo.toml"]) {
+for (const f of ["README.md", "nodejs/native/Cargo.toml", "java/Cargo.toml", "python/Cargo.toml", "ruby/Cargo.toml"]) {
   replaceInFile(f, /^hyperbuild = "\d+\.\d+\.\d+"\s*$/m, `hyperbuild = "${NEW_VERSION}"`);
 }
 
@@ -60,6 +60,10 @@ for (const f of ["nodejs/package.json"]) {
   replaceInFile(f, /^(\s*)"version": "\d+\.\d+\.\d+",\s*$/m, `$1"version": "${NEW_VERSION}",`);
 }
 
+for (const f of ["ruby/hyperbuild.gemspec"]) {
+  replaceInFile(f, /^(\s*spec\.version\s*=\s*)"\d+\.\d+\.\d+"\s*$/m, `$1"${NEW_VERSION}",`);
+}
+
 for (const f of ["java/pom.xml"]) {
   replaceInFile(f, /(<artifactId>hyperbuild<\/artifactId>\s*<version>)\d+\.\d+\.\d+(<\/version>)/, `$1${NEW_VERSION}$2`);
 }