diff --git a/package.json b/package.json
index 739df6a2..e12a1d47 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "@ledgerhq/hw-app-xrp": "^4.12.0",
     "@ledgerhq/hw-transport": "^4.12.0",
     "@ledgerhq/hw-transport-node-hid": "^4.12.0",
-    "@ledgerhq/ledger-core": "1.4.3",
+    "@ledgerhq/ledger-core": "1.4.4",
     "@ledgerhq/live-common": "^2.25.0",
     "axios": "^0.18.0",
     "babel-runtime": "^6.26.0",
diff --git a/src/commands/libcoreSignAndBroadcast.js b/src/commands/libcoreSignAndBroadcast.js
index 130397f8..7823fe44 100644
--- a/src/commands/libcoreSignAndBroadcast.js
+++ b/src/commands/libcoreSignAndBroadcast.js
@@ -85,6 +85,9 @@ export async function doSignAndBroadcast({
     njsWalletCurrency.bitcoinLikeNetworkParameters.SigHash,
   )
 
+  const hasTimestamp = njsWalletCurrency.bitcoinLikeNetworkParameters.UsesTimestampedTransaction
+  // TODO: const timestampDelay = njsWalletCurrency.bitcoinLikeNetworkParameters.TimestampDelay
+
   const currency = getCryptoCurrencyById(account.currencyId)
   const signedTransaction = await core.signTransaction({
     hwApp,
@@ -92,6 +95,7 @@ export async function doSignAndBroadcast({
     sigHashType: parseInt(sigHashType, 16).toString(),
     supportsSegwit: !!currency.supportsSegwit,
     isSegwit: account.isSegwit,
+    hasTimestamp,
   })
 
   const txHash = await njsAccount.asBitcoinLikeAccount().broadcastRawTransaction(signedTransaction)
diff --git a/yarn.lock b/yarn.lock
index ba593aec..d198ae78 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1482,9 +1482,9 @@
   dependencies:
     events "^2.0.0"
 
-"@ledgerhq/ledger-core@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@ledgerhq/ledger-core/-/ledger-core-1.4.3.tgz#6cc44560e5a8fb35f85c8ad9fbae56436eacfc94"
+"@ledgerhq/ledger-core@1.4.4":
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/ledger-core/-/ledger-core-1.4.4.tgz#36e1d41fee921e1635361b87e342ddec12293c0b"
   dependencies:
     "@ledgerhq/hw-app-btc" "^4.7.3"
     "@ledgerhq/hw-transport-node-hid" "^4.7.6"