diff --git a/README.md b/README.md
index 6e563d6..07ec990 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ Configuration is provided via environment variables:
 |HTTP_PORT| tcp port listen port |no|
 |JAMBONES_LOGLEVEL| log level for application, 'info' or 'debug'|no|
 |JAMBONES_MYSQL_HOST| mysql host|yes|
+|JAMBONES_MYSQL_PORT| mysql port |no|
 |JAMBONES_MYSQL_USER| mysql username|yes|
 |JAMBONES_MYSQL_PASSWORD|  mysql password|yes|
 |JAMBONES_MYSQL_DATABASE| mysql data|yes|
diff --git a/app.js b/app.js
index e324d37..796fd22 100644
--- a/app.js
+++ b/app.js
@@ -47,6 +47,7 @@ const {
   queryCallLimits
 } = require('@jambonz/db-helpers')({
   host: process.env.JAMBONES_MYSQL_HOST,
+  port: process.env.JAMBONES_MYSQL_PORT || 3306,
   user: process.env.JAMBONES_MYSQL_USER,
   password: process.env.JAMBONES_MYSQL_PASSWORD,
   database: process.env.JAMBONES_MYSQL_DATABASE,