diff --git a/source/_integrations/roborock.markdown b/source/_integrations/roborock.markdown
index 872091bf15e..e0cac1b2803 100644
--- a/source/_integrations/roborock.markdown
+++ b/source/_integrations/roborock.markdown
@@ -26,7 +26,7 @@ The Roborock integration allows you to control your [Roborock](https://us.roboro
 
 This integration requires a cloud connection to set up the device, but it communicates with the device entirely over your home network.
 
-Once you log in with your Roborock account, the integration will automatically discover your Roborock devices and get the needed information to communicate locally with them. Please ensure your Home Assistant instance can communicate with the local IP of your device. We recommend setting a static IP for your Roborock Vacuum to help prevent future issues.
+Once you log in with your Roborock account, the integration will automatically discover your Roborock devices and get the needed information to communicate locally with them. Please ensure your Home Assistant instance can communicate with the local IP of your device. We recommend setting a static IP for your Roborock Vacuum to help prevent future issues. The device communicates on port 58867. Depending on your firewall, you may need to allow communication from Home Assistant to your vacuum on that port.
 
 {% include integrations/config_flow.md %}