diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 87affa2e..cab33c6a 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -18,7 +18,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: '5.6'
-          extensions: mbstring, xml
+          extensions: mbstring, xml, curl
           tools: phpunit, composer
 
       - name: Validate composer.json and composer.lock