diff --git a/heroku.yml b/heroku.yml
index 9bf5f326..9ac6b2c9 100644
--- a/heroku.yml
+++ b/heroku.yml
@@ -1,6 +1,8 @@
 build:
   docker:
     web: Dockerfile
+    args:
+      - --target=production
   config:
     RAILS_ENV: production
 run: