diff --git a/remix-lib/src/execution/execution-context.js b/remix-lib/src/execution/execution-context.js
index 0e1b2dc313..9c1f770b5c 100644
--- a/remix-lib/src/execution/execution-context.js
+++ b/remix-lib/src/execution/execution-context.js
@@ -147,7 +147,7 @@ function ExecutionContext () {
     if (this.isVM()) {
       callback(null, { id: '-', name: 'VM' })
     } else {
-      this.web3().version.getNetwork((err, id) => {
+      web3.eth.net.getId((err, id) => {
         var name = null
         if (err) name = 'Unknown'
         // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-155.md
@@ -160,7 +160,7 @@ function ExecutionContext () {
         else name = 'Custom'
 
         if (id === '1') {
-          this.web3().eth.getBlock(0, (error, block) => {
+          web3.eth.getBlock(0, (error, block) => {
             if (error) console.log('cant query first block')
             if (block && block.hash !== mainNetGenesisHash) name = 'Custom'
             callback(err, { id, name })
@@ -279,6 +279,7 @@ function ExecutionContext () {
     } else {
       web3.setProvider(new web3.providers.HttpProvider(endpoint))
     }
+    // fixed
     if (web3.isConnected()) {
       executionContext = context
       self._updateBlockGasLimit()
@@ -305,7 +306,7 @@ function ExecutionContext () {
     if (blockNumber === '0x') {
       blockNumber = '0x0'
     }
-    blockNumber = web3.toHex(web3.toBigNumber(blockNumber))
+    blockNumber = web3.utils.toHex(web3.utils.toBN(blockNumber))
 
     self.blocks['0x' + block.hash().toString('hex')] = block
     self.blocks[blockNumber] = block
diff --git a/remix-lib/src/web3Provider/web3VmProvider.js b/remix-lib/src/web3Provider/web3VmProvider.js
index 716d71a38a..10274a31a5 100644
--- a/remix-lib/src/web3Provider/web3VmProvider.js
+++ b/remix-lib/src/web3Provider/web3VmProvider.js
@@ -32,15 +32,15 @@ function web3VmProvider () {
   this.lastProcessedStorageTxHash = {}
   this.sha3Preimages = {}
   // util
-  this.sha3 = function () { return self.web3.sha3.apply(self.web3, arguments) }
-  this.toHex = function () { return self.web3.toHex.apply(self.web3, arguments) }
-  this.toAscii = function () { return self.web3.toAscii.apply(self.web3, arguments) }
-  this.fromAscii = function () { return self.web3.fromAscii.apply(self.web3, arguments) }
-  this.fromDecimal = function () { return self.web3.fromDecimal.apply(self.web3, arguments) }
-  this.fromWei = function () { return self.web3.fromWei.apply(self.web3, arguments) }
-  this.toWei = function () { return self.web3.toWei.apply(self.web3, arguments) }
-  this.toBigNumber = function () { return self.web3.toBigNumber.apply(self.web3, arguments) }
-  this.isAddress = function () { return self.web3.isAddress.apply(self.web3, arguments) }
+  this.sha3 = function () { return self.web3.utils.sha3.apply(self.web3, arguments) }
+  this.toHex = function () { return self.web3.utils.toHex.apply(self.web3, arguments) }
+  this.toAscii = function () { return self.web3.utils.hexToAscii.apply(self.web3, arguments) }
+  this.fromAscii = function () { return self.web3.utils.asciiToHex.apply(self.web3, arguments) }
+  this.fromDecimal = function () { return self.web3.utils.numberToHex.apply(self.web3, arguments) }
+  this.fromWei = function () { return self.web3.utils.fromWei.apply(self.web3, arguments) }
+  this.toWei = function () { return self.web3.utils.toWei.apply(self.web3, arguments) }
+  this.toBigNumber = function () { return self.web3.utils.toBN.apply(self.web3, arguments) }
+  this.isAddress = function () { return self.web3.utils.isAddress.apply(self.web3, arguments) }
   this.utils = Web3.utils || []
 }