diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index dfe4b08..0328a1f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,7 +14,7 @@ jobs:
       matrix:
         os: [ ubuntu-16.04, ubuntu-18.04, macos-latest, windows-latest ]
         # Use various version syntaxes here for testing
-        ruby: [ .ruby-version, 2.3, 2.7.0, ruby-head, jruby, truffleruby, truffleruby-head, rubinius ]
+        ruby: [ .ruby-version, 2.2, 2.3, 2.7.0, ruby-head, jruby, truffleruby, truffleruby-head, rubinius ]
         exclude:
         - os: windows-latest
           ruby: truffleruby
@@ -34,7 +34,7 @@ jobs:
         ruby-version: ${{ matrix.ruby }}
     - run: ruby --version
     - run: ridk version
-      if: matrix.os == 'windows-latest' && !startsWith(matrix.ruby, '2.3')
+      if: matrix.os == 'windows-latest' && !startsWith(matrix.ruby, '2.3') && !startsWith(matrix.ruby, '2.2')
     - name: Subprocess test
       run: ruby test_subprocess.rb
     - name: OpenSSL version
diff --git a/README.md b/README.md
index f47777e..7d59cbd 100644
--- a/README.md
+++ b/README.md
@@ -16,14 +16,15 @@ This action currently supports these versions of MRI, JRuby and TruffleRuby:
 
 | Interpreter | Versions |
 | ----------- | -------- |
-| Ruby | 2.3.0 - 2.3.8, 2.4.0 - 2.4.9, 2.5.0 - 2.5.7, 2.6.0 - 2.6.5, 2.7.0, head |
+| Ruby | 2.2, 2.3.0 - 2.3.8, 2.4.0 - 2.4.9, 2.5.0 - 2.5.7, 2.6.0 - 2.6.5, 2.7.0, head |
 | JRuby | 9.2.9.0 |
 | TruffleRuby | 19.3.0, 19.3.1, head |
 | Rubinius | 4.14 |
 
-Note that Ruby 2.3 and the OpenSSL version it needs (1.0.2) are both end-of-life,
-which means Ruby 2.3 is unmaintained and considered insecure.
+Note that Ruby ≤ 2.3 and the OpenSSL version it needs (1.0.2) are both end-of-life,
+which means Ruby ≤ 2.3 is unmaintained and considered insecure.
 On Windows, Ruby 2.4 uses OpenSSL 1.0.2, which is no longer maintained.
+Ruby 2.2 resolves to 2.2.6 on Windows (last build from RubyInstaller) and 2.2.10 otherwise.
 
 ### Supported Platforms
 
diff --git a/dist/index.js b/dist/index.js
index 9dc5c75..8d53d1e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -2145,6 +2145,7 @@ __webpack_require__.r(__webpack_exports__);
 function getVersions(platform) {
   const versions = {
     "ruby": [
+      "2.2.10",
       "2.3.0", "2.3.1", "2.3.2", "2.3.3", "2.3.4", "2.3.5", "2.3.6", "2.3.7", "2.3.8",
       "2.4.0", "2.4.1", "2.4.2", "2.4.3", "2.4.4", "2.4.5", "2.4.6", "2.4.7", "2.4.9",
       "2.5.0", "2.5.1", "2.5.2", "2.5.3", "2.5.4", "2.5.5", "2.5.6", "2.5.7",
@@ -5103,6 +5104,7 @@ exports.getState = getState;
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "versions", function() { return versions; });
 const versions = {
+  "2.2.6": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.2.6-x64-mingw32.7z",
   "2.3.0": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.3.0-x64-mingw32.7z",
   "2.3.1": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.3.1-x64-mingw32.7z",
   "2.3.3": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.3.3-x64-mingw32.7z",
@@ -7896,7 +7898,7 @@ async function install(platform, ruby) {
   const newPath = setupPath(msys2, rubyPrefix)
   core.exportVariable('PATH', newPath)
 
-  if (version.startsWith('2.3')) {
+  if (version.startsWith('2.2') || version.startsWith('2.3')) {
     core.exportVariable('SSL_CERT_FILE', `${hostedRuby}\\ssl\\cert.pem`)
   }
 
diff --git a/generate-windows-versions.rb b/generate-windows-versions.rb
index 223fab9..f0da5c0 100644
--- a/generate-windows-versions.rb
+++ b/generate-windows-versions.rb
@@ -2,6 +2,7 @@ require 'net/http'
 require 'yaml'
 require 'json'
 
+min_version = '2.2.6'
 url = 'https://raw.githubusercontent.com/oneclick/rubyinstaller.org-website/master/_data/downloads.yaml'
 entries = YAML.load(Net::HTTP.get(URI(url)), symbolize_names: true)
 
@@ -18,7 +19,7 @@ versions = entries.select { |entry|
 }.sort_by { |version, entry|
   version
 }.select { |version, entry|
-  version >= "2.3"
+  Gem::Version.new(version) >= Gem::Version.new(min_version)
 }.map { |version, entry|
   [version, entry[:href]]
 }.to_h
diff --git a/ruby-builder-versions.js b/ruby-builder-versions.js
index fed14d0..d704beb 100644
--- a/ruby-builder-versions.js
+++ b/ruby-builder-versions.js
@@ -1,6 +1,7 @@
 export function getVersions(platform) {
   const versions = {
     "ruby": [
+      "2.2.10",
       "2.3.0", "2.3.1", "2.3.2", "2.3.3", "2.3.4", "2.3.5", "2.3.6", "2.3.7", "2.3.8",
       "2.4.0", "2.4.1", "2.4.2", "2.4.3", "2.4.4", "2.4.5", "2.4.6", "2.4.7", "2.4.9",
       "2.5.0", "2.5.1", "2.5.2", "2.5.3", "2.5.4", "2.5.5", "2.5.6", "2.5.7",
diff --git a/windows-versions.js b/windows-versions.js
index 485412a..cbec165 100644
--- a/windows-versions.js
+++ b/windows-versions.js
@@ -1,4 +1,5 @@
 export const versions = {
+  "2.2.6": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.2.6-x64-mingw32.7z",
   "2.3.0": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.3.0-x64-mingw32.7z",
   "2.3.1": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.3.1-x64-mingw32.7z",
   "2.3.3": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.3.3-x64-mingw32.7z",
diff --git a/windows.js b/windows.js
index 373a18d..09b1ac9 100644
--- a/windows.js
+++ b/windows.js
@@ -36,7 +36,7 @@ export async function install(platform, ruby) {
   const newPath = setupPath(msys2, rubyPrefix)
   core.exportVariable('PATH', newPath)
 
-  if (version.startsWith('2.3')) {
+  if (version.startsWith('2.2') || version.startsWith('2.3')) {
     core.exportVariable('SSL_CERT_FILE', `${hostedRuby}\\ssl\\cert.pem`)
   }