diff --git a/demos/Dockerfile b/demos/Dockerfile
index aeb0d1b13e..3805fda565 100644
--- a/demos/Dockerfile
+++ b/demos/Dockerfile
@@ -8,7 +8,7 @@
 FROM php:apache
 
 RUN apt-get update && apt-get install -y \
-        libicu-dev git jq unzip npm \
+        libicu-dev git unzip npm \
     && docker-php-ext-configure intl \
     && docker-php-ext-install intl \
     && docker-php-ext-install pdo pdo_mysql
@@ -32,7 +32,7 @@ RUN cd public/css && lessc agileui.less agileui.css
 ADD composer.json .
 RUN jq 'del(."require-release")|del(."require-dev")' < composer.json > tmp && mv tmp composer.json \
     && composer require --no-update fzaninotto/faker:^1.6 \
-    && composer install --no-dev
+    && composer install --no-dev --ignore-platform-req=php
 
 RUN echo 'disable_functions = pcntl_exec,exec,passthru,proc_open,shell_exec,system,popen/g' >> "$PHP_INI_DIR/php.ini"