diff --git a/.forgejo/workflows/phpunit.yml b/.forgejo/workflows/phpunit.yml
index 45811ca..9f52286 100644
--- a/.forgejo/workflows/phpunit.yml
+++ b/.forgejo/workflows/phpunit.yml
@@ -37,6 +37,16 @@ jobs:
             ${{ env.WP_TESTS_DIR }}
           key: cache-wordpress-1
 
+      - name: Cache Composer
+        id: cache-composer
+        uses: https://code.forgejo.org/actions/cache@v4
+        with:
+          path: |
+            ./vendor/
+            /root/.cache/composer/
+            /usr/local/bin/composer
+          key: cache-composer-2
+
       - name: Setup PHP
         uses: https://github.com/shivammathur/setup-php@v2
         with:
@@ -47,6 +57,7 @@ jobs:
           runner: self-hosted
 
       - name: Install Composer dependencies for PHP
+        if: steps.cache-composer.outputs.cache-hit != 'true'
         uses: ramsey/composer-install@v3
 
       - name: Install mysqladmin