diff --git a/lib/transaction/index.js b/lib/transaction/index.js
index c03b0c8..79c9574 100644
--- a/lib/transaction/index.js
+++ b/lib/transaction/index.js
@@ -4,3 +4,4 @@ module.exports.Input = require('./input');
 module.exports.Output = require('./output');
 module.exports.UnspentOutput = require('./unspentoutput');
 module.exports.Signature = require('./signature');
+module.exports.Sighash = require('./sighash');