diff --git a/config/database.yml.example b/config/database.yml.example
index dae8f881..0be19a93 100644
--- a/config/database.yml.example
+++ b/config/database.yml.example
@@ -15,6 +15,7 @@ default: &default
   encoding: utf8
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
   username: root
+  port: 3306
   password: 123456
 #  socket: /var/run/mysqld/mysqld.sock