diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9faaad244f..f6ce7f0065 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,6 +2,11 @@ image: registry.gitlab.com/fdroid/ci-images-server:latest
 
 lint:
   before_script:
+    - printf "Package\x3a androguard fdroidserver python3-asn1crypto python3-ruamel.yaml\nPin\x3a release a=stretch-backports\nPin-Priority\x3a 500\n" > /etc/apt/preferences.d/debian-stretch-backports.pref
+    - echo "deb http://deb.debian.org/debian/ stretch-backports main" > /etc/apt/sources.list.d/backports.list
+    - apt-get update
+    - apt-get -qy dist-upgrade
+
     - rm -rf fdroidserver
     - mkdir fdroidserver
     - curl --silent https://gitlab.com/fdroid/fdroidserver/repository/master/archive.tar.gz