diff --git a/README.md b/README.md
index 1aa55c771..317e3504d 100644
--- a/README.md
+++ b/README.md
@@ -4,3 +4,7 @@ system that supports IPv4, IPv6, ARPv4, DHCPv4 and TCP/IP.
 * WWW: <http://openmirage.org>
 * E-mail: <mirageos-devel@lists.xenproject.org>
 * Issues: <https://github.com/mirage/mirage-tcpip/issues>
+
+### License
+
+`mirage-tcpip` is distributed under the ISC license.