diff --git a/table.csv b/table.csv
index c6a7bbb..e6b0858 100644
--- a/table.csv
+++ b/table.csv
@@ -95,6 +95,8 @@ ws,                             multiaddr,      0x01dd,
 wss,                            multiaddr,      0x01de,
 p2p-websocket-star,             multiaddr,      0x01df,
 http,                           multiaddr,      0x01e0,
+json,                           serialization,  0x0200,         JSON (UTF-8-encoded)
+messagepack,                    serialization,  0x0201,         MessagePack
 zeronet,                        namespace,      0x1000,         ZeroNet site address
 x11,                            multihash,      0x1100,
 blake2b-8,                      multihash,      0xb201,         Blake2b consists of 64 output lengths that give different hashes