diff --git a/docker-compose.demo.yml b/docker-compose.demo.yml
index 6fe0f0c0c3dc159f68a28a48b1ba1445e63db6f7..046656542bf4f6118bbf5ab19251b540f7683358 100644
--- a/docker-compose.demo.yml
+++ b/docker-compose.demo.yml
@@ -6,6 +6,7 @@ services:
       - DJANGO_ALLOWED_HOSTS=librarydemo.rb9.xyz
       - OPENSEARCH_USERNAME=admin
       - OPENSEARCH_PASSWORD=VeryInsecurePassword1!
+      - SECRET_KEY=VeryInsecureSecretKey
     volumes:
       - demo_static:/home/app/web/staticfiles
       - ./demo_media:/home/app/web/mediafiles