diff --git a/README.md b/README.md
index 101a771..bf6c091 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ respond|ID|TECHNIQUE|IP_FROM|PORTS_FROM|IP_TO|PORTS_TO|EXTRA_ARGS
 The fields have the following semantics:
 
 - ``ID``: the message ID (random string)
-- ``TECHNIQUE``: the hole punching technique, one out of "tcp-syni" and "tcp-nutss"
+- ``TECHNIQUE``: the hole punching technique, one out of "tcp-syni", "tcp-nutss" and "udp"
 - ``IP_FROM``: the public IP address of the initiating peer
 - ``PORTS_FROM``: a list of previously used source ports of the initiating peer
 - ``IP_TO``: the public IP address of the responding peer