diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index b225a89..195af8a 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -65,6 +65,8 @@ jobs:
             - name: Copy and install Addons
               run: |
                   rsync -av --exclude='./vendor' --exclude='.github' --exclude='.git' --exclude='redaxo_cms' './' 'redaxo_cms/redaxo/src/addons/${{ github.event.repository.name }}'
+                  redaxo_cms/redaxo/bin/console install:download 'yform' '4.*'
+                  redaxo_cms/redaxo/bin/console package:install 'yform'
                   redaxo_cms/redaxo/bin/console package:install '${{ github.event.repository.name }}'
 
             # install dependencies from composer.json