diff --git a/Dockerfile b/Dockerfile
index 910a283..a3353b8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM php:7.3-stretch
 
 RUN apt-get -y update && apt-get -y install git && apt-get clean
 
-RUN curl -sS https://getcomposer.org/installer | php && mv composer.phar /usr/local/bin/composer && composer global require hirak/prestissimo --no-plugins --no-scripts
+RUN curl -sS https://getcomposer.org/installer | php && mv composer.phar /usr/local/bin/composer && composer self-update 2.0.0
 WORKDIR /app
 COPY . ./
 RUN composer install --no-dev --no-interaction -o