diff --git a/homeserver.yaml b/homeserver.yaml
index 629f670..cb525d5 100644
--- a/homeserver.yaml
+++ b/homeserver.yaml
@@ -1,5 +1,5 @@
 server_name: "$BASE_URL"
-public_baseurl: "$PUBLIC_URL"
+public_baseurl: "https://$PUBLIC_URL"
 pid_file: /homeserver.pid
 web_client: false
 soft_file_limit: 0