diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 82b07a5..61aac03 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -22,11 +22,9 @@ jobs:
         - { os: windows-2019, ruby: mingw }
         - { os: windows-2019, ruby: mswin }
         exclude:
-        - { os: windows-2016, ruby: '2.0' }
         - { os: windows-2016, ruby: debug }
         - { os: windows-2016, ruby: truffleruby }
         - { os: windows-2016, ruby: truffleruby-head }
-        - { os: windows-2019, ruby: '2.0' }
         - { os: windows-2019, ruby: debug }
         - { os: windows-2019, ruby: truffleruby }
         - { os: windows-2019, ruby: truffleruby-head }
diff --git a/dist/index.js b/dist/index.js
index 8247519..3c46c48 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -27753,10 +27753,10 @@ const rubyInstallerVersions = __webpack_require__(223).versions
 
 const drive = common.drive
 
-// needed for 2.1, 2.2, 2.3, and mswin, cert file used by Git for Windows
+// needed for 2.0-2.3, and mswin, cert file used by Git for Windows
 const certFile = 'C:\\Program Files\\Git\\mingw64\\ssl\\cert.pem'
 
-// location & path for old RubyInstaller DevKit (MSYS), Ruby 2.1, 2.2 and 2.3
+// location & path for old RubyInstaller DevKit (MSYS), Ruby 2.0-2.3
 const msys = `${drive}:\\DevKit64`
 const msysPathEntries = [`${msys}\\mingw\\x86_64-w64-mingw32\\bin`, `${msys}\\mingw\\bin`, `${msys}\\bin`]
 
@@ -27822,7 +27822,7 @@ async function downloadAndExtract(engine, version, url, base, rubyPrefix) {
 async function setupMingw(version) {
   core.exportVariable('MAKE', 'make.exe')
 
-  if (version.match(/^2\.[123]/)) {
+  if (version.match(/^2\.[0123]/)) {
     core.exportVariable('SSL_CERT_FILE', certFile)
     await common.measure('Installing MSYS', async () => installMSYS(version))
     return msysPathEntries
@@ -27831,7 +27831,7 @@ async function setupMingw(version) {
   }
 }
 
-// Ruby 2.1, 2.2 and 2.3
+// Ruby 2.0, 2.1, 2.2 and 2.3
 async function installMSYS(version) {
   const url = 'https://github.com/oneclick/rubyinstaller/releases/download/devkit-4.7.2/DevKit-mingw64-64-4.7.2-20130224-1432-sfx.exe'
   const downloadPath = await tc.downloadTool(url)
@@ -28202,6 +28202,7 @@ exports.debug = debug; // for test
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "versions", function() { return versions; });
 const versions = {
+  "2.0.0": "https://github.com/oneclick/rubyinstaller/releases/download/ruby-2.0.0-p648/ruby-2.0.0-p648-x64-mingw32.7z",
   "2.1.9": "https://github.com/oneclick/rubyinstaller/releases/download/ruby-2.1.9/ruby-2.1.9-x64-mingw32.7z",
   "2.2.6": "https://github.com/oneclick/rubyinstaller/releases/download/ruby-2.2.6/ruby-2.2.6-x64-mingw32.7z",
   "2.3.0": "https://github.com/oneclick/rubyinstaller/releases/download/ruby-2.3.0/ruby-2.3.0-x64-mingw32.7z",
diff --git a/generate-windows-versions.rb b/generate-windows-versions.rb
index 3d38461..d0b9cd2 100644
--- a/generate-windows-versions.rb
+++ b/generate-windows-versions.rb
@@ -2,7 +2,7 @@ require 'net/http'
 require 'yaml'
 require 'json'
 
-min_requirements = ['~> 2.1.9', '>= 2.2.6'].map { |req| Gem::Requirement.new(req) }
+min_requirements = ['~> 2.0.0', '~> 2.1.9', '>= 2.2.6'].map { |req| Gem::Requirement.new(req) }
 
 url = 'https://raw.githubusercontent.com/oneclick/rubyinstaller.org-website/master/_data/downloads.yaml'
 entries = YAML.load(Net::HTTP.get(URI(url)), symbolize_names: true)
diff --git a/windows-versions.js b/windows-versions.js
index 3631637..c7c8c89 100644
--- a/windows-versions.js
+++ b/windows-versions.js
@@ -1,4 +1,5 @@
 export const versions = {
+  "2.0.0": "https://github.com/oneclick/rubyinstaller/releases/download/ruby-2.0.0-p648/ruby-2.0.0-p648-x64-mingw32.7z",
   "2.1.9": "https://github.com/oneclick/rubyinstaller/releases/download/ruby-2.1.9/ruby-2.1.9-x64-mingw32.7z",
   "2.2.6": "https://github.com/oneclick/rubyinstaller/releases/download/ruby-2.2.6/ruby-2.2.6-x64-mingw32.7z",
   "2.3.0": "https://github.com/oneclick/rubyinstaller/releases/download/ruby-2.3.0/ruby-2.3.0-x64-mingw32.7z",
diff --git a/windows.js b/windows.js
index a7e6615..e88411f 100644
--- a/windows.js
+++ b/windows.js
@@ -13,10 +13,10 @@ const rubyInstallerVersions = require('./windows-versions').versions
 
 const drive = common.drive
 
-// needed for 2.1, 2.2, 2.3, and mswin, cert file used by Git for Windows
+// needed for 2.0-2.3, and mswin, cert file used by Git for Windows
 const certFile = 'C:\\Program Files\\Git\\mingw64\\ssl\\cert.pem'
 
-// location & path for old RubyInstaller DevKit (MSYS), Ruby 2.1, 2.2 and 2.3
+// location & path for old RubyInstaller DevKit (MSYS), Ruby 2.0-2.3
 const msys = `${drive}:\\DevKit64`
 const msysPathEntries = [`${msys}\\mingw\\x86_64-w64-mingw32\\bin`, `${msys}\\mingw\\bin`, `${msys}\\bin`]
 
@@ -82,7 +82,7 @@ async function downloadAndExtract(engine, version, url, base, rubyPrefix) {
 async function setupMingw(version) {
   core.exportVariable('MAKE', 'make.exe')
 
-  if (version.match(/^2\.[123]/)) {
+  if (version.match(/^2\.[0123]/)) {
     core.exportVariable('SSL_CERT_FILE', certFile)
     await common.measure('Installing MSYS', async () => installMSYS(version))
     return msysPathEntries
@@ -91,7 +91,7 @@ async function setupMingw(version) {
   }
 }
 
-// Ruby 2.1, 2.2 and 2.3
+// Ruby 2.0, 2.1, 2.2 and 2.3
 async function installMSYS(version) {
   const url = 'https://github.com/oneclick/rubyinstaller/releases/download/devkit-4.7.2/DevKit-mingw64-64-4.7.2-20130224-1432-sfx.exe'
   const downloadPath = await tc.downloadTool(url)