diff --git a/lib/protocol/networks.js b/lib/protocol/networks.js
index a43a28af..bee5e566 100644
--- a/lib/protocol/networks.js
+++ b/lib/protocol/networks.js
@@ -24,7 +24,7 @@ var main, testnet, regtest, segnet3, segnet4, simnet;
  * @default
  */
 
-network.types = ['main', 'testnet', 'regtest', 'segnet3', 'segnet4'];
+network.types = ['main', 'testnet', 'regtest', 'segnet3', 'segnet4', 'simnet'];
 
 /**
  * Main