diff --git a/lib/ss58/index.js b/lib/ss58/index.js
index a567e65..c5f5309 100644
--- a/lib/ss58/index.js
+++ b/lib/ss58/index.js
@@ -21,7 +21,7 @@ import bs58 from 'bs58';
 import { blake2b } from 'blakejs/blake2b';
 
 let defaultType = 42
-const KNOWN_TYPES = [0, 1, 2, 42, 43, 68, 69];
+const KNOWN_TYPES = [0, 1, 2, 37, 42, 43, 68, 69];
 
 const PREFIX = stringToBytes('SS58PRE');