diff --git a/docker/dev/mtt-php72-apache/Dockerfile-web b/docker/dev/mtt-php72-apache/Dockerfile-web
index 800cd6b..8fd0e08 100644
--- a/docker/dev/mtt-php72-apache/Dockerfile-web
+++ b/docker/dev/mtt-php72-apache/Dockerfile-web
@@ -7,7 +7,7 @@ RUN docker-php-ext-install mysqli && \
   echo 'Alias "/phpinfo" "/var/www/phpinfo/phpinfo.php"' > /etc/apache2/conf-enabled/phpinfo.conf && \
   echo 'LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\"" combined' > /etc/apache2/conf-enabled/logformat.conf && \
   a2enmod rewrite && \
-  curl -o /usr/local/bin/phpunit -fL "https://phar.phpunit.de/phpunit-9.phar" && \
+  curl -o /usr/local/bin/phpunit -fL "https://phar.phpunit.de/phpunit-8.phar" && \
   chmod +x /usr/local/bin/phpunit && \
   ln -s html /var/www/src
 
diff --git a/docker/dev/mtt-php72-apache/compose.yml b/docker/dev/mtt-php72-apache/compose.yml
index c7f33f3..0f52ec9 100644
--- a/docker/dev/mtt-php72-apache/compose.yml
+++ b/docker/dev/mtt-php72-apache/compose.yml
@@ -12,5 +12,6 @@ services:
     - MTT_DB_TYPE=sqlite
     volumes:
     - ../../../src:/var/www/html
+    - ../../../tests:/var/www/tests
     - ./php-mtt.ini:/usr/local/etc/php/conf.d/php-mtt.ini
     - ./php-opcache.ini:/usr/local/etc/php/conf.d/php-opcache.ini