diff --git a/schemas/depositblock.proto b/schemas/depositblock.proto
index 5e17080..ea34ce6 100644
--- a/schemas/depositblock.proto
+++ b/schemas/depositblock.proto
@@ -10,7 +10,7 @@ message DepositBlock {
         required string depositReceiver = 5;
         required string rootToken = 6;
         repeated string amounts = 7;
-        repeated uint64 tokenIds = 8;
+        repeated string tokenIds = 8;
         string rootTunnelAddress = 9;
         bool refuel = 10;
         string nonce = 11;
diff --git a/schemas/withdrawblock.proto b/schemas/withdrawblock.proto
index 9dd3516..6720f1f 100644
--- a/schemas/withdrawblock.proto
+++ b/schemas/withdrawblock.proto
@@ -11,7 +11,7 @@ message WithdrawBlock {
         uint64 burnTransactionBlockNumber = 6;
         string transactionType = 7;
         repeated string amounts = 8;
-        repeated uint64 tokenIds = 9;
+        repeated string tokenIds = 9;
         required bool isDecoded = 10;
         required string rootToken = 11;
         string rootTunnel = 12;