diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4060459cf..284dff19e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-20.04, ubuntu-22.04, macos-11, macos-12, macos-13, macos-arm-oss, windows-2019, windows-2022 ]
+        os: [ ubuntu-20.04, ubuntu-22.04, macos-11, macos-12, macos-13, macos-14, macos-arm-oss, windows-2019, windows-2022 ]
         ruby: [
           '1.9', '2.0', '2.1', '2.2', '2.3', '2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3', ruby-head,
           jruby, jruby-head,
@@ -33,6 +33,14 @@ jobs:
         exclude:
         # https://github.com/ruby/setup-ruby/issues/496
         - { os: ubuntu-22.04, ruby: '2.2' }
+        # Too old, fails to compile on macos-14 (arm64)
+        - { os: macos-14, ruby: '1.9' }
+        - { os: macos-14, ruby: '2.0' }
+        - { os: macos-14, ruby: '2.1' }
+        - { os: macos-14, ruby: '2.2' }
+        - { os: macos-14, ruby: '2.3' }
+        - { os: macos-14, ruby: '2.4' }
+        - { os: macos-14, ruby: '2.5' }
         # Too old, fails to compile on macos-arm-oss
         - { os: macos-arm-oss, ruby: '1.9' }
         - { os: macos-arm-oss, ruby: '2.0' }
diff --git a/README.md b/README.md
index 7bfe77460..46cb41ce7 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ The action works on these [GitHub-hosted runners](https://docs.github.com/en/act
 | Operating System | Supported |
 | ---------------- | --------- |
 | Ubuntu  | `ubuntu-20.04`, `ubuntu-22.04` |
-| macOS   | `macos-11`, `macos-12`, `macos-13`, `macos-13-xlarge` (arm64) |
+| macOS   | `macos-11`, `macos-12`, `macos-13`, `macos-13-xlarge` (arm64), `macos-14` (arm64) |
 | Windows | `windows-2019`, `windows-2022` |
 
 The prebuilt releases are generated by [ruby-builder](https://github.com/ruby/ruby-builder)
diff --git a/common.js b/common.js
index d283e0235..9318486c8 100644
--- a/common.js
+++ b/common.js
@@ -169,6 +169,7 @@ const GitHubHostedPlatforms = [
   'macos-12-x64',
   'macos-13-x64',
   'macos-13-arm64',
+  'macos-14-arm64',
   'windows-2019-x64',
   'windows-2022-x64',
 ]
diff --git a/dist/index.js b/dist/index.js
index 4dfdcb3e1..c475acd36 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -529,6 +529,7 @@ const GitHubHostedPlatforms = [
   'macos-12-x64',
   'macos-13-x64',
   'macos-13-arm64',
+  'macos-14-arm64',
   'windows-2019-x64',
   'windows-2022-x64',
 ]