diff --git a/README.md b/README.md
index 4ad3000..3cdb0c6 100644
--- a/README.md
+++ b/README.md
@@ -94,7 +94,7 @@ key = bitcoin.ECKey.fromWIF("L1uyy5qTuGrVXrmrsvHWHgVzW9kKdrp27wBC7Vs6nZDTF2BRUVw
 tx.sign(0, key)
 
 // Print transaction serialized as hex
-console.log(tx.serializeHex())
+console.log(tx.toHex())
 // => 0100000001313eb630b128102b60241ca895f1d0ffca2170d5a0990e094f2182c102ab94aa000000008a47304402200169f1f844936dc60df54e812345f5dd3e6681fea52e33c25154ad9cc23a330402204381ed8e73d74a95b15f312f33d5a0072c7a12dd6c3294df6e8efbe4aff27426014104e75628573696aed32d7656fb35e9c71ea08eb6492837e13d2662b9a36821d0fff992692fd14d74fdec20fae29128ba12653249cbeef521fc5eba84dde0689f27ffffffff01983a0000000000001976a914ad618cf4333b3b248f9744e8e81db2964d0ae39788ac00000000
 
 // You could now push the transaction onto the Bitcoin network manually (see https://blockchain.info/pushtx)