diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3e69781a..099d2898 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -20,7 +20,7 @@ jobs:
       with:
         php-version: ${{ matrix.php }}
         coverage: pcov
-        extension-csv: mbstring
+        extension-csv: mbstring, pgsql
 
     - name: Check versions
       run: php -v && composer -V