diff --git a/technitium_dns/config.yaml b/technitium_dns/config.yaml
index af8d46d..a194aee 100644
--- a/technitium_dns/config.yaml
+++ b/technitium_dns/config.yaml
@@ -13,6 +13,7 @@ ports:
   53/udp: 53
   53/tcp: 53
   5380/tcp: 5380
+  53443/tcp: 53443
 map:
   - addon_config:rw
   - ssl