diff --git a/etc/services b/etc/services
index 47b0b8b0dfcb..42231eba9fc4 100644
--- a/etc/services
+++ b/etc/services
@@ -2004,6 +2004,8 @@ hacl-test	5305/tcp
 hacl-test	5305/udp
 cfengine	5308/tcp
 cfengine	5308/udp
+mdns		5353/tcp   #Multicast DNS
+mdns		5353/udp   #Multicast DNS
 postgresql	5432/tcp   #PostgreSQL Database
 postgresql	5432/udp   #PostgreSQL Database
 rplay		5555/udp