diff --git a/README.md b/README.md
index cc5b8fa2..ff21388d 100644
--- a/README.md
+++ b/README.md
@@ -149,7 +149,7 @@ with:
 
 These tools can be setup globally using the `tools` input.
 
-`blackfire`, `blackfire-player`, `codeception`, `composer`, `composer-normalize`, `composer-prefetcher`, `composer-require-checker`, `cs2pr`, `deployer`, `flex`, `infection`, `pecl`, `phan`, `phinx`, `phive`, `php-config`, `php-cs-fixer`, `phpcbf`, `phpcpd`, `phpcs`, `phpize`, `phpmd`, `phpstan`, `phpunit`, `prestissimo`, `psalm`, `symfony`, `vapor-cli`
+`blackfire`, `blackfire-player`, `codeception`, `composer`, `composer-normalize`, `composer-prefetcher`, `composer-require-checker`, `composer-unused`, `cs2pr`, `deployer`, `flex`, `infection`, `pecl`, `phan`, `phinx`, `phive`, `phpcbf`, `phpcpd`, `php-config`, `php-cs-fixer`, `phpcs`, `phpize`, `phpmd`, `phpstan`, `phpunit`, `prestissimo`, `psalm`, `symfony`, `vapor-cli`
 
 ```yaml
 uses: shivammathur/setup-php@v2
@@ -669,4 +669,4 @@ If this action helped you.
 
 - [About GitHub Actions](https://github.com/features/actions "GitHub Actions")
 - [GitHub Actions Syntax](https://help.github.com/en/articles/workflow-syntax-for-github-actions "GitHub Actions Syntax")
-- [Other Awesome Actions](https://github.com/sdras/awesome-actions "List of Awesome GitHub Actions")
+- [Other Awesome Actions](https://github.com/sdras/awesome-actions "List of Awesome GitHub Actions")
\ No newline at end of file
diff --git a/__tests__/tools.test.ts b/__tests__/tools.test.ts
index 03bf1ee7..c27b00d3 100644
--- a/__tests__/tools.test.ts
+++ b/__tests__/tools.test.ts
@@ -452,6 +452,7 @@ describe('Tools tests', () => {
       'composer-normalize',
       'composer-prefetcher:1.2.3',
       'composer-require-checker',
+      'composer-unused',
       'cs2pr:1.2.3',
       'flex',
       'infection',
@@ -491,6 +492,9 @@ describe('Tools tests', () => {
     expect(script).toContain(
       'add_tool https://github.com/maglnet/ComposerRequireChecker/releases/latest/download/composer-require-checker.phar composer-require-checker'
     );
+    expect(script).toContain(
+      'add_tool https://github.com/composer-unused/composer-unused/releases/latest/download/composer-unused.phar composer-unused'
+    );
     expect(script).toContain(
       'add_tool https://github.com/staabm/annotate-pull-request-from-checkstyle/releases/download/1.2.3/cs2pr cs2pr'
     );
diff --git a/dist/index.js b/dist/index.js
index b3c0786d..d11cf2a2 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -2319,6 +2319,11 @@ async function addTools(tools_csv, php_version, os_version) {
                 url = github + 'maglnet/ComposerRequireChecker/' + uri;
                 script += await addArchive(tool, version, url, os_version);
                 break;
+            case 'composer-unused':
+                uri = await getUri(tool, '.phar', version, 'releases', '', 'download');
+                url = github + 'composer-unused/composer-unused/' + uri;
+                script += await addArchive(tool, version, url, os_version);
+                break;
             case 'cs2pr':
                 uri = await getUri(tool, '', version, 'releases', '', 'download');
                 url = github + 'staabm/annotate-pull-request-from-checkstyle/' + uri;
diff --git a/src/tools.ts b/src/tools.ts
index 184b0174..c5ed8a56 100644
--- a/src/tools.ts
+++ b/src/tools.ts
@@ -505,6 +505,11 @@ export async function addTools(
         url = github + 'maglnet/ComposerRequireChecker/' + uri;
         script += await addArchive(tool, version, url, os_version);
         break;
+      case 'composer-unused':
+        uri = await getUri(tool, '.phar', version, 'releases', '', 'download');
+        url = github + 'composer-unused/composer-unused/' + uri;
+        script += await addArchive(tool, version, url, os_version);
+        break;
       case 'cs2pr':
         uri = await getUri(tool, '', version, 'releases', '', 'download');
         url = github + 'staabm/annotate-pull-request-from-checkstyle/' + uri;