diff --git a/node_modules/appwrite/dist/esm/sdk.js b/node_modules/appwrite/dist/esm/sdk.js
index b1fcf3b..4ba8d80 100644
--- a/node_modules/appwrite/dist/esm/sdk.js
+++ b/node_modules/appwrite/dist/esm/sdk.js
@@ -1,5 +1,6 @@
 import JSONbigModule from 'json-bigint';
 import BigNumber from 'bignumber.js';
+const __BN = (BigNumber && typeof BigNumber.default === 'function') ? BigNumber.default : BigNumber;
 
 /******************************************************************************
 Copyright (c) Microsoft Corporation.
@@ -468,7 +469,7 @@ const JSONbigSerializer = JSONbigModule({ useNativeBigInt: true });
 const MAX_SAFE = BigInt(Number.MAX_SAFE_INTEGER);
 const MIN_SAFE = BigInt(Number.MIN_SAFE_INTEGER);
 function reviver(_key, value) {
-    if (BigNumber.isBigNumber(value)) {
+    if (__BN.isBigNumber(value)) {
         if (value.isInteger()) {
             const str = value.toFixed();
             const bi = BigInt(str);