diff --git a/source/hassio/addon_config.markdown b/source/hassio/addon_config.markdown
index f2cc6c4ca55..f44b1b13a65 100644
--- a/source/hassio/addon_config.markdown
+++ b/source/hassio/addon_config.markdown
@@ -137,3 +137,4 @@ We support:
 - float
 - email
 - url
+- port