diff --git a/blockchain/build.gradle b/blockchain/build.gradle
index 6e6b6c47..38531d2c 100644
--- a/blockchain/build.gradle
+++ b/blockchain/build.gradle
@@ -108,8 +108,8 @@ dependencies {
 
     implementation files('libs/hedera-sdk-java-2.29.0.jar')
     implementation "com.tangem:blstlib:master-6@aar"
-    implementation "com.tangem:wallet-core:4.0.46-tangem1@aar"
-    implementation("com.tangem:wallet-core-proto:4.0.46-tangem1") {
+    implementation "com.tangem:wallet-core:4.0.46-tangem4@aar"
+    implementation("com.tangem:wallet-core-proto:4.0.46-tangem4") {
         exclude group: 'com.google.protobuf', module: 'protobuf-javalite'
     }
 
diff --git a/blockchain/src/main/java/com/tangem/blockchain/blockchains/ton/TonTransactionBuilder.kt b/blockchain/src/main/java/com/tangem/blockchain/blockchains/ton/TonTransactionBuilder.kt
index 5f7ca776..84af70b9 100644
--- a/blockchain/src/main/java/com/tangem/blockchain/blockchains/ton/TonTransactionBuilder.kt
+++ b/blockchain/src/main/java/com/tangem/blockchain/blockchains/ton/TonTransactionBuilder.kt
@@ -2,11 +2,11 @@ package com.tangem.blockchain.blockchains.ton
 
 import com.google.protobuf.ByteString
 import com.tangem.blockchain.common.*
+import com.tangem.blockchain.extensions.Result
 import com.tangem.common.KeyPair
 import com.tangem.common.card.EllipticCurve
 import com.tangem.crypto.CryptoUtils
 import wallet.core.jni.proto.TheOpenNetwork
-import com.tangem.blockchain.extensions.Result
 
 internal class TonTransactionBuilder(private val walletAddress: String) {
 
@@ -73,7 +73,7 @@ internal class TonTransactionBuilder(private val walletAddress: String) {
 
         val jettonTransfer = TheOpenNetwork.JettonTransfer.newBuilder()
             .setTransfer(transfer)
-            .setJettonAmount(amount.longValueOrZero)
+            .setJettonAmount(ByteString.copyFrom(amount.byteArrayValue))
             .setToOwner(destination)
             .setResponseAddress(walletAddress)
             .setForwardAmount(1) // some amount needed to send "jetton transfer notification", use minimum
diff --git a/blockchain/src/main/java/com/tangem/blockchain/common/Amount.kt b/blockchain/src/main/java/com/tangem/blockchain/common/Amount.kt
index 0a8f370d..0133df08 100644
--- a/blockchain/src/main/java/com/tangem/blockchain/common/Amount.kt
+++ b/blockchain/src/main/java/com/tangem/blockchain/common/Amount.kt
@@ -17,6 +17,8 @@ data class Amount(
     // Be careful! The property may overflow if the decimals are much larger than the long value.
     val longValueOrZero: Long by lazy { value?.movePointRight(decimals)?.toLong() ?: 0L }
 
+    val byteArrayValue: ByteArray? by lazy { value?.movePointRight(decimals)?.toBigInteger()?.toByteArray() }
+
     constructor(
         value: BigDecimal?,
         blockchain: Blockchain,