diff --git a/proto/src/main/proto/grpc.proto b/proto/src/main/proto/grpc.proto
index 4002f8a1..a975206e 100644
--- a/proto/src/main/proto/grpc.proto
+++ b/proto/src/main/proto/grpc.proto
@@ -116,10 +116,10 @@ message CreateOfferRequest {
     string price = 3;
     bool useMarketBasedPrice = 4;
     double marketPriceMargin = 5;
-    uint64 amount = 6;
-    uint64 minAmount = 7;
+    uint64 amount = 6 [jstype = JS_STRING];
+    uint64 minAmount = 7 [jstype = JS_STRING];
     double buyerSecurityDeposit = 8;
-    uint64 triggerPrice = 9;
+    uint64 triggerPrice = 9 [jstype = JS_STRING];
     string paymentAccountId = 10;
     string makerFeeCurrencyCode = 11;
 }
@@ -606,10 +606,10 @@ message BtcBalanceInfo {
 }
 
 message XmrBalanceInfo {
-    uint64 unlockedBalance = 1;
-    uint64 lockedBalance = 2;
-    uint64 reservedOfferBalance = 3;
-    uint64 reservedTradeBalance = 4;
+    uint64 unlockedBalance = 1 [jstype = JS_STRING];
+    uint64 lockedBalance = 2 [jstype = JS_STRING];
+    uint64 reservedOfferBalance = 3 [jstype = JS_STRING];
+    uint64 reservedTradeBalance = 4 [jstype = JS_STRING];
 }
 
 message AddressBalanceInfo {
diff --git a/proto/src/main/proto/pb.proto b/proto/src/main/proto/pb.proto
index 4475a5d3..be245fcf 100644
--- a/proto/src/main/proto/pb.proto
+++ b/proto/src/main/proto/pb.proto
@@ -2361,7 +2361,7 @@ message BlockChainExplorer {
 
 message PaymentAccount {
     string id = 1;
-    int64 creation_date = 2;
+    int64 creation_date = 2 [jstype = JS_STRING];
     PaymentMethod payment_method = 3;
     string account_name = 4;
     repeated TradeCurrency trade_currencies = 5;
@@ -2371,8 +2371,8 @@ message PaymentAccount {
 
 message PaymentMethod {
     string id = 1;
-    int64 max_trade_period = 2;
-    int64 max_trade_limit = 3;
+    int64 max_trade_period = 2 [jstype = JS_STRING];
+    int64 max_trade_limit = 3 [jstype = JS_STRING];
 }
 
 // Currency