diff --git a/Dockerfile b/Dockerfile
index 3919c12..c990d4e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
 FROM composer AS composer
 WORKDIR /app
 ADD . /app
+RUN composer global require hirak/prestissimo
 RUN composer install \
     && ./vendor/bin/phpcs --ignore=_build . \
     && ./vendor/bin/phpunit \