diff --git a/ippisite/requirements-core.txt b/ippisite/requirements-core.txt
index 56031793dd609cd3d8fbbcbe851560686ddb6eee..d0fef5c647e7c81264b8671d73e636b47554690e 100644
--- a/ippisite/requirements-core.txt
+++ b/ippisite/requirements-core.txt
@@ -8,6 +8,7 @@ django-debug-toolbar
 django-allauth
 djangorestframework==3.11.0
 django-celery-results==1.2.1
+django-maintenance-mode==0.15.1
 # import scripts
 pandas==0.25.0
 openpyxl