diff --git a/.buildpacks b/.buildpacks
new file mode 100644
index 0000000000..fecb9275b2
--- /dev/null
+++ b/.buildpacks
@@ -0,0 +1,2 @@
+https://github.com/heroku/heroku-buildpack-nodejs.git#v58
+https://github.com/pkgr/heroku-buildpack-ruby.git#universal
diff --git a/.pkgr.yml b/.pkgr.yml
index e9e8347b49..c3295b93b8 100644
--- a/.pkgr.yml
+++ b/.pkgr.yml
@@ -18,4 +18,5 @@ addons:
 crons:
   - packaging/cron/openproject-clear-old-sessions
   - packaging/cron/openproject-create-svn-repositories
+buildpack: https://github.com/ddollar/heroku-buildpack-multi.git