diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 44f35c7..c5363e2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,6 +22,7 @@ jobs:
         uses: php-actions/composer@v6
         with:
           php_version: ${{ matrix.php }}
+          php_extensions: pcntl
 
       - name: Archive build
         run: mkdir /tmp/github-actions/ && tar -cvf /tmp/github-actions/build.tar ./
@@ -58,7 +59,7 @@ jobs:
         with:
           version: 10
           php_version: ${{ matrix.php }}
-          php_extensions: xdebug
+          php_extensions: xdebug pcntl
           coverage_text: _coverage/coverage.txt
           coverage_clover: _coverage/clover.xml