diff --git a/README.md b/README.md
index 85cf26b..af00d87 100644
--- a/README.md
+++ b/README.md
@@ -41,8 +41,22 @@ Client options:
                                             traffic from remote
   -u --udp                                  forward UDP traffic instead of
                                             TCP
+     --udpTimeoutSec=INT                    When using udp forwarding,
+                                            timeout in seconds after when the
+                                            tunnel connection is closed.
+                                            Default 30sec, -1 means no timeout
   -p --httpProxy=USER:PASS@HOST:PORT        If set, will use this proxy to
                                             connect to the server
+     --soMark=int                           (linux only) Mark network packet
+                                            with SO_MARK sockoption with the
+                                            specified value. You need to use
+                                            {root, sudo, capabilities} to run
+                                            wstunnel when using this option
+     --upgradePathPrefix=String             Use a specific prefix that will
+                                            show up in the http path in the
+                                            upgrade request. Useful if you need
+                                            to route requests server side but
+                                            don't have vhosts
 Server options:
      --server                               Start a server that will forward
                                             traffic for you