diff --git a/docker/apache-config b/docker/apache-config
index bc737b94d80326e9e9157e530a62c77be8a34169..0c8b395924d88f9312618ea7b008af9fea92a29e 100644
--- a/docker/apache-config
+++ b/docker/apache-config
@@ -28,6 +28,7 @@ ServerName ${DJANGO_PRIMARY_FQDN}
   # Aliases for docs and admin_docs
   Alias /documentation/ "/home/gracedb/gracedb_project/docs/user_docs/build/"
   Alias /admin_docs/ "/home/gracedb/gracedb_project/docs/admin_docs/build/"
+  ProxyPreserveHost on
   ProxyPass "/robots.txt" "!"
   ProxyPass "/shibboleth-ds" "!"
   ProxyPass "/Shibboleth.sso" "!"