diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2ea9b0995..10325970b 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-14, macos-arm-oss, windows-2019, windows-2022 ]
+        os: [ ubuntu-20.04, ubuntu-22.04, ubuntu-24.04, 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 +33,8 @@ jobs:
         exclude:
         # https://github.com/ruby/setup-ruby/issues/496
         - { os: ubuntu-22.04, ruby: '2.2' }
+        - { os: ubuntu-24.04, ruby: '1.9' }
+        - { os: ubuntu-24.04, ruby: '2.2' }
         # These old Rubies fail to compile on macos-arm-oss (macOS 13, arm64), which is used for ruby/ruby-builder
         - { os: macos-14, ruby: '1.9' }
         - { os: macos-14, ruby: '2.0' }
diff --git a/README.md b/README.md
index 210abe24e..f0fd3b9b1 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ The action works on these [GitHub-hosted runners](https://docs.github.com/en/act
 
 | Operating System | Supported |
 | ---------------- | --------- |
-| Ubuntu  | `ubuntu-20.04`, `ubuntu-22.04` |
+| Ubuntu  | `ubuntu-20.04`, `ubuntu-22.04`, `ubuntu-24.04` |
 | macOS   | `macos-11`, `macos-12`, `macos-13`, `macos-14` |
 | Windows | `windows-2019`, `windows-2022` |
 
diff --git a/common.js b/common.js
index f15cf11f5..c7b9d5c4f 100644
--- a/common.js
+++ b/common.js
@@ -165,6 +165,7 @@ export async function hashFile(file) {
 const GitHubHostedPlatforms = [
   'ubuntu-20.04-x64',
   'ubuntu-22.04-x64',
+  'ubuntu-24.04-x64',
   'macos-11-x64',
   'macos-12-x64',
   'macos-13-x64',
diff --git a/dist/index.js b/dist/index.js
index d91fe36cb..3c6146fb0 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -525,6 +525,7 @@ async function hashFile(file) {
 const GitHubHostedPlatforms = [
   'ubuntu-20.04-x64',
   'ubuntu-22.04-x64',
+  'ubuntu-24.04-x64',
   'macos-11-x64',
   'macos-12-x64',
   'macos-13-x64',