diff --git a/docs/deployment/zero-downtime-deploys.md b/docs/deployment/zero-downtime-deploys.md
index fabfcb88f4d..68b8cece8f9 100644
--- a/docs/deployment/zero-downtime-deploys.md
+++ b/docs/deployment/zero-downtime-deploys.md
@@ -170,6 +170,7 @@ A healthcheck entry takes the following properties:
 - `initialDelay`: (default: 0, unit: seconds) Number of seconds to wait after a container has started before triggering the healthcheck.
 - `name`: (default: autogenerated) The name of the healthcheck. If unspecified, it will be autogenerated from the rest of the healthcheck information.
 - `path`: (default: `/` - for http checks): An http path to check.
+- `port`: (default: `5000`): Port to run healthcheck against.
 - `timeout`: (default: `5` seconds): Number of seconds to wait before timing out a healthcheck.
 - `type`: (default: `""` - none): Type of the healthcheck. Options: liveness, readiness, startup.
 - `uptime`: (default: `""` - none): Amount of time the container must be alive before the container is considered healthy. Any restarts will cause this to check to fail, and this check does not respect retries.