diff --git a/src/transaction_builder.js b/src/transaction_builder.js
index 5e0a35f..71a46ec 100644
--- a/src/transaction_builder.js
+++ b/src/transaction_builder.js
@@ -19,6 +19,10 @@ function TransactionBuilder() {
 TransactionBuilder.fromTransaction = function(transaction) {
   var txb = new TransactionBuilder()
 
+  // Copy other transaction fields
+  txb.tx.version = transaction.version
+  txb.tx.locktime = transaction.locktime
+
   // Extract/add inputs
   transaction.ins.forEach(function(txIn) {
     txb.addInput(txIn.hash, txIn.index, txIn.sequence)
diff --git a/test/fixtures/transaction_builder.json b/test/fixtures/transaction_builder.json
index a44078b..ad09d7d 100644
--- a/test/fixtures/transaction_builder.json
+++ b/test/fixtures/transaction_builder.json
@@ -83,6 +83,29 @@
             "value": 10000
           }
         ]
+      },
+      {
+        "description": "Transaction w/ non-default input sequence numbers, version and locktime",
+        "txid": "4503038f144af7b0c11fad6e09cf8deb4ef04645d203e1c90b86f25b7b243fe8",
+        "txhex": "0400000001ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff020000006b483045022100c5bcd521df085481e2dcc2c0f14173043f0fa2001dca582b45186a95d248d28002204c571eabcec1410bd53a7da29b9da6b4c858c3fdabbfdb110a030c507ff5bc0501210279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798b9c220000110270000000000001976a914aa4d7985c57e011a8b3dd8e0e5a73aaef41629c588ac09990400",
+        "version": 4,
+        "locktime": 301321,
+        "inputs": [
+          {
+            "index": 2,
+            "prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
+            "sequence": 2147001,
+            "privKeys": [
+              "KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU73sVHnoWn"
+            ]
+          }
+        ],
+        "outputs": [
+          {
+            "script": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
+            "value": 10000
+          }
+        ]
       }
     ]
   },
diff --git a/test/transaction_builder.js b/test/transaction_builder.js
index 63ad8be..8e2b528 100644
--- a/test/transaction_builder.js
+++ b/test/transaction_builder.js
@@ -196,6 +196,10 @@ describe('TransactionBuilder', function() {
           })
         })
 
+        // FIXME: add support for locktime/version in TransactionBuilder API
+        if (f.version !== undefined) txb.tx.version = f.version
+        if (f.locktime !== undefined) txb.tx.locktime = f.locktime
+
         var tx = txb.build()
 
         assert.equal(tx.getId(), f.txid)