diff --git a/templates/mailman-web.py.j2 b/templates/mailman-web.py.j2
index 42273ae..1f0e942 100644
--- a/templates/mailman-web.py.j2
+++ b/templates/mailman-web.py.j2
@@ -239,3 +239,5 @@ AUTH_LDAP_USER_FLAGS_BY_GROUP = {{ mailman.web.ldap.mappings|d({})|to_json }}
 {% endif %}
 
 SESSION_EXPIRE_SECONDS = {{ mailman.web.session_timeout }}
+HYPERKITTY_ENABLE_GRAVATAR = False
+HYPERKITTY_ALLOW_WEB_POSTING = False