diff --git a/table.csv b/table.csv
index a46f88b..2f343a2 100644
--- a/table.csv
+++ b/table.csv
@@ -95,7 +95,8 @@ ws,                             multiaddr,      0x01dd,
 wss,                            multiaddr,      0x01de,
 p2p-websocket-star,             multiaddr,      0x01df,
 http,                           multiaddr,      0x01e0,
-messagepack,                    serialization,  0x0200,         MessagePack
+json,                           serialization,  0x0200,         JSON (UTF-8-encoded)
+messagepack,                    serialization,  0x0201,         MessagePack
 x11,                            multihash,      0x1100,
 blake2b-8,                      multihash,      0xb201,         Blake2b consists of 64 output lengths that give different hashes
 blake2b-16,                     multihash,      0xb202,