diff --git a/bip-0155.mediawiki b/bip-0155.mediawiki
index 3e7b0d82..0ec68019 100644
--- a/bip-0155.mediawiki
+++ b/bip-0155.mediawiki
@@ -117,6 +117,11 @@ The list of reserved network IDs is as follows:
 | <code>CJDNS</code>
 | 16
 | Cjdns overlay network address
+|-
+| <code>0x07</code>
+| <code>YGGDRASIL</code>
+| 16
+| Yggdrasil overlay network address
 |}
 
 Clients are RECOMMENDED to gossip addresses from all known networks even if they are currently not connected to some of them. That could help multi-homed nodes and make it more difficult for an observer to tell which networks a node is connected to.
@@ -184,6 +189,10 @@ I2P addresses MUST be sent with the <code>I2P</code> network ID, with the decode
 
 Cjdns addresses are simply IPv6 addresses in the <code>fc00::/8</code> range<ref>[https://github.com/cjdelisle/cjdns/blob/6e46fa41f5647d6b414612d9d63626b0b952746b/doc/Whitepaper.md#pulling-it-all-together Cjdns whitepaper: Pulling It All Together]</ref>. They MUST be sent with the <code>CJDNS</code> network ID.
 
+==Appendix E: Yggdrasil address encoding==
+
+Yggdrasil addresses are simply IPv6 addresses in the <code>0200::/7</code> range<ref>[https://yggdrasil-network.github.io/faq.html#will-yggdrasil-conflict-with-my-network-routing Yggdrasil FAQ]</ref>. They MUST be sent with the <code>YGGDRASIL</code> network ID.
+
 ==References==
 
 <references/>