diff --git a/roles/hackmd/templates/config.json.j2 b/roles/hackmd/templates/config.json.j2
index 9c56580..aa1570a 100644
--- a/roles/hackmd/templates/config.json.j2
+++ b/roles/hackmd/templates/config.json.j2
@@ -2,6 +2,7 @@
     "production": {
         "domain": "{{ hackmd_domain }}",
         "protocolUseSSL": true,
+        "allowAnonymous": false,
         "allowFreeURL": true,
         "sessionSecret": "{{ hackmd_secret }}",
         "hsts": {