diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 4add0b5e..80940124 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -22,7 +22,7 @@ jobs:
       with:
         php-version: ${{ matrix.php }}
         coverage: pcov
-        extension-csv: mbstring
+        extensions: mbstring
 
     - name: Set up database
       run: |