diff --git a/.github/workflows/api-php-tests.yml b/.github/workflows/api-php-tests.yml
index 271b8c3bce..a9c776e11d 100644
--- a/.github/workflows/api-php-tests.yml
+++ b/.github/workflows/api-php-tests.yml
@@ -32,6 +32,7 @@ jobs:
           php-version: ${{ matrix.php-versions }}
           extensions: pdo_sqlite,pdo_mysql,pdo_pgsql,gd,zip
           coverage: pcov
+          tools: phpunit:9.6
 
       ### Back to normal setup
       - name: Set up server non MySQL