diff --git a/libs/remix-lib/package.json b/libs/remix-lib/package.json
index e514b1827e..e79d38a74c 100644
--- a/libs/remix-lib/package.json
+++ b/libs/remix-lib/package.json
@@ -25,7 +25,8 @@
     "from-exponential": "1.1.1",
     "solc": "^0.7.4",
     "string-similarity": "^4.0.4",
-    "web3": "^4.0.3"
+    "web3": "^4.0.3",
+    "web3-validator": "^1.0.2"
   },
   "devDependencies": {
     "@babel/core": "^7.4.5",
@@ -54,4 +55,4 @@
   "typings": "src/index.d.ts",
   "gitHead": "8edf05261b079599b71f0fe2f890b005e2d8a6c3",
   "types": "./src/index.d.ts"
-}
\ No newline at end of file
+}
diff --git a/libs/remix-lib/src/execution/typeConversion.ts b/libs/remix-lib/src/execution/typeConversion.ts
index 46a25bff8a..5d7bf97084 100644
--- a/libs/remix-lib/src/execution/typeConversion.ts
+++ b/libs/remix-lib/src/execution/typeConversion.ts
@@ -1,11 +1,12 @@
 'use strict'
 import { BN } from 'bn.js'
 import { bufferToHex } from '@ethereumjs/util'
+import { isBigInt } from 'web3-validator'
 
 export function toInt (h) {
   if (h.indexOf && h.indexOf('0x') === 0) {
     return (new BN(h.replace('0x', ''), 16)).toString(10)
-  } else if ((h.constructor && h.constructor.name === 'BigNumber') || BN.isBN(h)) {
+  } else if ((h.constructor && h.constructor.name === 'BigNumber') || BN.isBN(h) || isBigInt(h)) {
     return h.toString(10)
   }
   return h
@@ -21,7 +22,7 @@ function convertToString (v) {
         ret.push(convertToString(v[k]))
       }
       return ret
-    } else if (BN.isBN(v) || (v.constructor && v.constructor.name === 'BigNumber')) {
+    } else if (BN.isBN(v) || (v.constructor && v.constructor.name === 'BigNumber') || isBigInt(v)) {
       return v.toString(10)
     } else if (v._isBuffer) {
       return bufferToHex(v)
diff --git a/libs/remix-simulator/src/VmProxy.ts b/libs/remix-simulator/src/VmProxy.ts
index 8fc22415c7..90798c45f7 100644
--- a/libs/remix-simulator/src/VmProxy.ts
+++ b/libs/remix-simulator/src/VmProxy.ts
@@ -4,7 +4,8 @@ import { helpers } from '@remix-project/remix-lib'
 const  { normalizeHexAddress } = helpers.ui
 import { ConsoleLogs, hash } from '@remix-project/remix-lib'
 import { toChecksumAddress, bufferToHex, Address, toBuffer } from '@ethereumjs/util'
-import utils, {toBigInt} from 'web3-utils'
+import utils from 'web3-utils'
+import {isBigInt} from 'web3-validator'
 import { ethers } from 'ethers'
 import { VMContext } from './vm-context'
 import type { StateManager } from '@ethereumjs/statemanager'
@@ -278,7 +279,7 @@ export class VmProxy {
         let consoleArgs = iface.decodeFunctionData(functionDesc, payload)
         consoleArgs = consoleArgs.map((value) => {
           // Copied from: https://github.com/web3/web3.js/blob/e68194bdc590d811d4bf66dde12f99659861a110/packages/web3-utils/src/utils.js#L48C10-L48C10
-          if (value && value.constructor && value.constructor.name === 'BigNumber') {
+          if (value && ((value.constructor && value.constructor.name === 'BigNumber') || isBigInt(value))) {
             return value.toString()
           }
           return value
@@ -425,9 +426,9 @@ export class VmProxy {
   getSha3Input (stack, memory) {
     const memoryStart = toHexPaddedString(stack[stack.length - 1])
     const memoryLength = toHexPaddedString(stack[stack.length - 2])
-    const memStartDec = toBigInt(memoryStart).toString(10)
+    const memStartDec = utils.toBigInt(memoryStart).toString(10)
     const memoryStartInt = parseInt(memStartDec) * 2
-    const memLengthDec = toBigInt(memoryLength).toString(10)
+    const memLengthDec = utils.toBigInt(memoryLength).toString(10)
     const memoryLengthInt = parseInt(memLengthDec.toString()) * 2
 
     let i = Math.floor(memoryStartInt / 32)