diff --git a/Dockerfile b/Dockerfile
index c5e8060..3d9b20e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,8 @@
-FROM php:7.2-apache
+FROM php:7.3-apache
 RUN apt-get update && \
     apt-get install -y \
         git \
+        libzip-dev \
         zlib1g-dev 
 WORKDIR /tls
 RUN openssl req -new -x509 -days 365 -nodes \
@@ -17,7 +18,9 @@ RUN php composer-setup.php
 RUN php -r "unlink('composer-setup.php');"
 ADD . /app
 WORKDIR /app
-RUN php /install/composer.phar install --no-dev --prefer-dist
+RUN php /install/composer.phar require lcobucci/jwt:3.3.3
+RUN php /install/composer.phar update
+RUN php /install/composer.phar install
 COPY site.conf /etc/apache2/sites-enabled/site.conf
 RUN chown -R www-data:www-data /app
 EXPOSE 443
diff --git a/composer.json b/composer.json
index 84aedd0..a26b551 100644
--- a/composer.json
+++ b/composer.json
@@ -28,9 +28,9 @@
         "league/flysystem": "^1.0.",
         "league/oauth2-server": "^8.0",
         "league/route": "^4.5",
-        "pdsinterop/flysystem-rdf": "dev-master",
-        "pdsinterop/solid-auth": "dev-master",
-        "pdsinterop/solid-crud": "dev-master",
+        "pdsinterop/flysystem-rdf": "dev-tested",
+        "pdsinterop/solid-auth": "dev-tested",
+        "pdsinterop/solid-crud": "dev-tested",
         "php-http/httplug": "^2.1",
         "phptal/phptal": "^1.4"
     },
diff --git a/run-solid-test-suite.sh b/run-solid-test-suite.sh
index 7c4ad21..1cde9ab 100755
--- a/run-solid-test-suite.sh
+++ b/run-solid-test-suite.sh
@@ -54,4 +54,4 @@ teardown || true
 setup
 runPss
 runTests
-teardown
+# teardown