diff --git a/lib/index.js b/lib/index.js
index c46735a..64c9f7e 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1,6 +1,6 @@
 const { PollingBlockTracker } = require('@metamask/eth-block-tracker')
-const Eth = require('@metamask/ethjs-query')
-const EthContract = require('@metamask/ethjs-contract')
+const { Web3Provider } = require('@ethersproject/providers')
+const { Contract } = require('@ethersproject/contracts')
 const Token = require('./token')
 const abi = require('human-standard-token-abi')
 const SafeEventEmitter = require('@metamask/safe-event-emitter').default
@@ -19,9 +19,7 @@ class TokenTracker extends SafeEventEmitter {
       pollingInterval,
     })
 
-    const eth = new Eth(opts.provider)
-    const contract = new EthContract(eth)
-    this.TokenContract = contract(abi)
+    this.provider = opts.provider
 
     const tokens = opts.tokens || []
     this.balanceDecimals = opts.balanceDecimals
@@ -52,6 +50,14 @@ class TokenTracker extends SafeEventEmitter {
     return this.tokens.map(token => token.serialize())
   }
 
+  getContractAtAddress(tokenAddress) {
+    return new Contract(
+      tokenAddress,
+      abi,
+      new Web3Provider(this.provider),
+    )
+  }
+
   async updateBalances() {
     try {
       await Promise.all(this.tokens.map((token) => {
@@ -68,7 +74,7 @@ class TokenTracker extends SafeEventEmitter {
   createTokenFrom (opts, balanceDecimals) {
     const owner = this.userAddress
     const { address, symbol, balance, decimals } = opts
-    const contract = this.TokenContract.at(address)
+    const contract = this.getContractAtAddress(address)
     return new Token({
       address,
       symbol,
diff --git a/lib/token.js b/lib/token.js
index e75eae7..08aff8a 100644
--- a/lib/token.js
+++ b/lib/token.js
@@ -1,4 +1,5 @@
 const BN = require('bn.js')
+const { BigNumber } = require("@ethersproject/bignumber")
 const util = require('./util')
 
 /**
@@ -137,7 +138,10 @@ class Token {
     }
 
     if (result) {
-      const val = result[0]
+      let val = result
+      if (BigNumber.isBigNumber(result)) {
+        val = new BN(result.toString())
+      }
       this[key] = val
       return val
     }
diff --git a/package.json b/package.json
index 9ec8857..40533e1 100644
--- a/package.json
+++ b/package.json
@@ -38,9 +38,10 @@
     "/lib"
   ],
   "dependencies": {
+    "@ethersproject/bignumber": "^5.7.0",
+    "@ethersproject/contracts": "^5.7.0",
+    "@ethersproject/providers": "^5.7.2",
     "@metamask/eth-block-tracker": "^11.0.3",
-    "@metamask/ethjs-contract": "^0.4.1",
-    "@metamask/ethjs-query": "^0.7.1",
     "@metamask/safe-event-emitter": "^3.0.0",
     "bn.js": "^5.2.1",
     "deep-equal": "^2.2.0",
@@ -55,7 +56,7 @@
     "@lavamoat/allow-scripts": "^2.3.1",
     "@lavamoat/preinstall-always-fail": "^2.0.0",
     "@metamask/auto-changelog": "^3.4.3",
-    "ganache": "7.3.1",
+    "ganache": "7.9.2",
     "solc": "^0.4.26",
     "tape": "^5.6.1"
   },
@@ -71,7 +72,9 @@
       "ganache>keccak": true,
       "ganache>leveldown": true,
       "ganache>secp256k1": true,
-      "ganache>utf-8-validate": true
+      "ganache>utf-8-validate": true,
+      "ganache>@trufflesuite/uws-js-unofficial>bufferutil": false,
+      "ganache>@trufflesuite/uws-js-unofficial>utf-8-validate": false
     }
   }
 }
diff --git a/test/helper.js b/test/helper.js
index de59efd..dd11cdf 100644
--- a/test/helper.js
+++ b/test/helper.js
@@ -2,8 +2,8 @@ const assert = require('assert').strict
 const fs = require('fs')
 const path = require('path')
 const ganache = require('ganache')
-const Eth = require('@metamask/ethjs-query')
-const EthContract = require('@metamask/ethjs-contract')
+const { Web3Provider } = require('@ethersproject/providers')
+const { ContractFactory } = require('@ethersproject/contracts')
 const solc = require('solc')
 
 const source = fs.readFileSync(path.resolve(__dirname, 'contracts/Token.sol')).toString();
@@ -13,35 +13,29 @@ const SimpleTokenDeployer = compiled.contracts[':SimpleToken']
 const defaultQuantity = '100000000000000000000' // 100 x 10 ^ 18
 async function setupSimpleTokenEnvironment ({ qty = defaultQuantity } = {}) {
   const provider = ganache.provider()
-  const eth = new Eth(provider)
+  const ethersProvider = new Web3Provider(provider)
 
-  const addresses = await eth.accounts()
+  const addresses = await ethersProvider.listAccounts()
   assert(addresses.length > 0, 'test network should be initialized with accounts')
 
   const owner = addresses[0]
-  const contract = new EthContract(eth)
   const abi = JSON.parse(SimpleTokenDeployer.interface)
-  const StandardToken = contract(abi, SimpleTokenDeployer.bytecode, {
-    from: owner,
-    gas: '3000000',
-    gasPrice: '875000000',
-  })
+  const factory = new ContractFactory(abi, SimpleTokenDeployer.bytecode, ethersProvider.getSigner(owner))
 
-  const txHash = await StandardToken.new(qty)
+  const token = await factory.deploy(qty)
+  const txHash = token.deployTransaction.hash
   assert.ok(txHash, 'should have published the token and returned a transaction hash')
 
-  await new Promise((resolve) => setTimeout(resolve, 300))
-  const receipt = await eth.getTransactionReceipt(txHash)
+  await token.deployed()
+  const receipt = await ethersProvider.getTransactionReceipt(txHash)
 
   const tokenAddress = receipt.contractAddress
   assert.ok(tokenAddress, 'should have a token address')
 
-  const token = StandardToken.at(tokenAddress)
-  const result = await token.balanceOf(owner)
-  const balance = result[0]
-  assert.equal(balance.toString(10), qty, 'owner should have all')
+  const balance = await token.balanceOf(owner)
+  assert.equal(balance.toString(), qty, 'owner should have all')
 
-  return { addresses, eth, provider, token, tokenAddress }
+  return { addresses, provider, token, tokenAddress }
 }
 
 module.exports = { setupSimpleTokenEnvironment }
diff --git a/test/integration/human-standard-token.js b/test/integration/human-standard-token.js
index 8397972..86f0c87 100644
--- a/test/integration/human-standard-token.js
+++ b/test/integration/human-standard-token.js
@@ -2,17 +2,13 @@ const fs = require('fs')
 const path = require('path')
 const test = require('tape')
 const ganache = require('ganache')
-const provider = ganache.provider()
-
+const { Web3Provider } = require('@ethersproject/providers')
+const { ContractFactory } = require('@ethersproject/contracts')
 const solc = require('solc')
 const TokenTracker = require('../../lib')
-const BN = ('bn.js')
 
-const Eth = require('@metamask/ethjs-query')
-const EthContract = require('@metamask/ethjs-contract')
-const eth = new Eth(provider)
-const contract = new EthContract(eth)
 
+const provider = ganache.provider()
 const source = fs.readFileSync(path.resolve(__dirname, '..', 'contracts/Token.sol')).toString();
 const compiled = solc.compile(source, 1)
 const HumanStandardDeployer = compiled.contracts[':HumanStandardToken']
@@ -23,8 +19,10 @@ const EXPECTED_SYMBOL = 'EXP'
 let addresses = []
 let token, tokenAddress, tracked
 
+const ethersProvider = new Web3Provider(provider)
+
 test('testrpc has addresses', function (t) {
-  eth.accounts()
+  ethersProvider.listAccounts()
   .then((accounts) => {
     addresses = accounts
     t.ok(accounts, 'loaded accounts')
@@ -34,34 +32,23 @@ test('testrpc has addresses', function (t) {
 
 test('HumanStandardToken publishing token & checking balance', function (t) {
   const abi = JSON.parse(HumanStandardDeployer.interface)
-  const HumanStandardToken = contract(abi, HumanStandardDeployer.bytecode, {
-    from: addresses[0],
-    gas: '3000000',
-    gasPrice: '875000000',
-  })
-  const humanStandardToken = HumanStandardToken.new('1000',
-                                                    'DanBucks',
-                                                    '2', // decimals
-                                                    SET_SYMBOL)
-  .then((txHash) => {
-    t.ok(txHash, 'publishes a txHash')
+  const factory = new ContractFactory(abi, HumanStandardDeployer.bytecode, ethersProvider.getSigner(addresses[0]))
 
-    return new Promise((res, rej) => {
-      setTimeout(() => res(txHash), 200)
-    })
+  factory.deploy('1000', 'DanBucks', '2', SET_SYMBOL, {
+    gasLimit: '3000000',
+    gasPrice: '875000000',
   })
-  .then((txHash) => {
-    return eth.getTransactionReceipt(txHash)
+  .then((contract) => {
+    t.ok(contract.deployTransaction.hash, 'publishes a txHash')
+    return contract.deployed()
   })
-  .then((receipt) => {
-    const addr = receipt.contractAddress
-    tokenAddress = addr
-    token = HumanStandardToken.at(addr)
+  .then((deployedContract) => {
+    token = deployedContract
+    tokenAddress = token.address
     return token.balanceOf(addresses[0])
   })
-  .then((res) => {
-    const balance = res[0]
-    t.equal(balance.toString(10), '1000', 'owner should have all')
+  .then((balance) => {
+    t.equal(balance.toString(), '1000', 'owner should have all')
     t.end()
   })
   .catch((reason) => {
@@ -90,8 +77,8 @@ test('HumanStandardToken balances are tracked', function (t) {
     t.equal(tracked.balance.toString(10), '1000', 'initial balance loaded')
     return token.transfer(addresses[1], '110')
   })
-  .then((txHash) => {
-    return eth.getTransactionReceipt(txHash)
+  .then((tx) => {
+    return ethersProvider.getTransactionReceipt(tx.hash)
   })
   .then((receipt) => {
     var a = new Promise((res, rej) => { setTimeout(res, 200) })
diff --git a/test/integration/simple-token.js b/test/integration/simple-token.js
index 93d591c..53aa591 100644
--- a/test/integration/simple-token.js
+++ b/test/integration/simple-token.js
@@ -11,17 +11,16 @@ const less = '10000000000000000000' // 100 x 10 ^ 17
 
 test('StandardToken balances are tracked', function (t) {
   let addresses
-  let eth
   let token
   let tokenAddress
   let tokenTracker
+  let provider
   setupSimpleTokenEnvironment()
   .then((environment) => {
     addresses = environment.addresses
-    eth = environment.eth
     token = environment.token
     tokenAddress = environment.tokenAddress
-    const { provider } = environment
+    provider = environment.provider
     tokenTracker = new TokenTracker({
       userAddress: addresses[0],
       provider,
@@ -43,8 +42,11 @@ test('StandardToken balances are tracked', function (t) {
     t.equal(tracked.balance.toString(10), qty, 'initial balance loaded')
     return token.transfer(addresses[1], less)
   })
-  .then((txHash) => {
-    return eth.getTransactionReceipt(txHash)
+  .then((tx) => {
+    return provider.request({
+      method: 'eth_getTransactionReceipt',
+      params: [tx.hash],
+    })
   })
   .then((receipt) => {
     var a = new Promise((res, rej) => { setTimeout(res, 200) })
diff --git a/test/integration/token-precision.js b/test/integration/token-precision.js
index c231519..6de229c 100644
--- a/test/integration/token-precision.js
+++ b/test/integration/token-precision.js
@@ -2,16 +2,15 @@ const fs = require('fs')
 const path = require('path')
 const test = require('tape')
 const ganache = require('ganache')
-const provider = ganache.provider()
 const solc = require('solc')
 const TokenTracker = require('../../lib')
 const BN = require('bn.js')
 const util = require('../../lib/util')
+const { ContractFactory } = require('@ethersproject/contracts')
+const { Web3Provider } = require('@ethersproject/providers')
 
-const Eth = require('@metamask/ethjs-query')
-const EthContract = require('@metamask/ethjs-contract')
-const eth = new Eth(provider)
-const contract = new EthContract(eth)
+const provider = ganache.provider()
+const ethersProvider = new Web3Provider(provider)
 let count = 0
 
 const source = fs.readFileSync(path.resolve(__dirname, '..', 'contracts/ZeppelinToken.sol')).toString();
@@ -20,10 +19,10 @@ const compiled = solc.compile(source, 1)
 const SimpleTokenDeployer = compiled.contracts[':TutorialToken']
 
 let addresses = []
-let token, tokenAddress, tracked
+let tokenAddress, tracked
 
 test('testrpc has addresses', function (t) {
-  eth.accounts()
+  ethersProvider.listAccounts()
   .then((accounts) => {
     addresses = accounts
     t.ok(accounts, 'loaded accounts')
@@ -99,32 +98,23 @@ function generateTestWithParams(opts = {}) {
   test(`Generated token precision test ${++count}`, function (t) {
     const abi = JSON.parse(SimpleTokenDeployer.interface)
     const owner = addresses[0]
-    const StandardToken = contract(abi, SimpleTokenDeployer.bytecode, {
-      from: owner,
-      gas: '3000000',
-      gasPrice: '875000000',
-    })
-    StandardToken.new(qty, precision)
-    .then((txHash) => {
-      t.ok(txHash, 'publishes a txHash')
+    const factory = new ContractFactory(abi, SimpleTokenDeployer.bytecode, ethersProvider.getSigner(owner))
 
-      return new Promise((res, rej) => {
-        setTimeout(() => res(txHash), 300)
-      })
+    factory.deploy(qty, precision, {
+      gasLimit: 3000000,
+      gasPrice: 875000000
     })
-    .then((txHash) => {
-      return eth.getTransactionReceipt(txHash)
+    .then((token) => {
+      t.ok(token.deployTransaction.hash, 'publishes a txHash')
+      return token.deployed()
     })
-    .then((receipt) => {
-      const addr = receipt.contractAddress
-      t.ok(addr, 'should have an address')
-      tokenAddress = addr
-      token = StandardToken.at(addr)
-      return token.balanceOf(owner)
+    .then((deployedToken) => {
+      t.ok(deployedToken.address, 'should have an address')
+      tokenAddress = deployedToken.address
+      return deployedToken.balanceOf(owner)
     })
-    .then((res) => {
-      const balance = res[0]
-      t.equal(balance.toString(10), qty, 'owner should have all')
+    .then((balance) => {
+      t.equal(balance.toString(), qty, 'owner should have all')
 
       var tokenTracker = new TokenTracker({
         userAddress: addresses[0],
diff --git a/yarn.lock b/yarn.lock
index 37457cb..aa63fdf 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1349,6 +1349,296 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@ethersproject/abi@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/abi@npm:5.7.0"
+  dependencies:
+    "@ethersproject/address": ^5.7.0
+    "@ethersproject/bignumber": ^5.7.0
+    "@ethersproject/bytes": ^5.7.0
+    "@ethersproject/constants": ^5.7.0
+    "@ethersproject/hash": ^5.7.0
+    "@ethersproject/keccak256": ^5.7.0
+    "@ethersproject/logger": ^5.7.0
+    "@ethersproject/properties": ^5.7.0
+    "@ethersproject/strings": ^5.7.0
+  checksum: bc6962bb6cb854e4d2a4d65b2c49c716477675b131b1363312234bdbb7e19badb7d9ce66f4ca2a70ae2ea84f7123dbc4e300a1bfe5d58864a7eafabc1466627e
+  languageName: node
+  linkType: hard
+
+"@ethersproject/abstract-provider@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/abstract-provider@npm:5.7.0"
+  dependencies:
+    "@ethersproject/bignumber": ^5.7.0
+    "@ethersproject/bytes": ^5.7.0
+    "@ethersproject/logger": ^5.7.0
+    "@ethersproject/networks": ^5.7.0
+    "@ethersproject/properties": ^5.7.0
+    "@ethersproject/transactions": ^5.7.0
+    "@ethersproject/web": ^5.7.0
+  checksum: 74cf4696245cf03bb7cc5b6cbf7b4b89dd9a79a1c4688126d214153a938126d4972d42c93182198653ce1de35f2a2cad68be40337d4774b3698a39b28f0228a8
+  languageName: node
+  linkType: hard
+
+"@ethersproject/abstract-signer@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/abstract-signer@npm:5.7.0"
+  dependencies:
+    "@ethersproject/abstract-provider": ^5.7.0
+    "@ethersproject/bignumber": ^5.7.0
+    "@ethersproject/bytes": ^5.7.0
+    "@ethersproject/logger": ^5.7.0
+    "@ethersproject/properties": ^5.7.0
+  checksum: a823dac9cfb761e009851050ebebd5b229d1b1cc4a75b125c2da130ff37e8218208f7f9d1386f77407705b889b23d4a230ad67185f8872f083143e0073cbfbe3
+  languageName: node
+  linkType: hard
+
+"@ethersproject/address@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/address@npm:5.7.0"
+  dependencies:
+    "@ethersproject/bignumber": ^5.7.0
+    "@ethersproject/bytes": ^5.7.0
+    "@ethersproject/keccak256": ^5.7.0
+    "@ethersproject/logger": ^5.7.0
+    "@ethersproject/rlp": ^5.7.0
+  checksum: 64ea5ebea9cc0e845c413e6cb1e54e157dd9fc0dffb98e239d3a3efc8177f2ff798cd4e3206cf3660ee8faeb7bef1a47dc0ebef0d7b132c32e61e550c7d4c843
+  languageName: node
+  linkType: hard
+
+"@ethersproject/base64@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/base64@npm:5.7.0"
+  dependencies:
+    "@ethersproject/bytes": ^5.7.0
+  checksum: 7dd5d734d623582f08f665434f53685041a3d3b334a0e96c0c8afa8bbcaab934d50e5b6b980e826a8fde8d353e0b18f11e61faf17468177274b8e7c69cd9742b
+  languageName: node
+  linkType: hard
+
+"@ethersproject/basex@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/basex@npm:5.7.0"
+  dependencies:
+    "@ethersproject/bytes": ^5.7.0
+    "@ethersproject/properties": ^5.7.0
+  checksum: 326087b7e1f3787b5fe6cd1cf2b4b5abfafbc355a45e88e22e5e9d6c845b613ffc5301d629b28d5c4d5e2bfe9ec424e6782c804956dff79be05f0098cb5817de
+  languageName: node
+  linkType: hard
+
+"@ethersproject/bignumber@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/bignumber@npm:5.7.0"
+  dependencies:
+    "@ethersproject/bytes": ^5.7.0
+    "@ethersproject/logger": ^5.7.0
+    bn.js: ^5.2.1
+  checksum: 8c9a134b76f3feb4ec26a5a27379efb4e156b8fb2de0678a67788a91c7f4e30abe9d948638458e4b20f2e42380da0adacc7c9389d05fce070692edc6ae9b4904
+  languageName: node
+  linkType: hard
+
+"@ethersproject/bytes@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/bytes@npm:5.7.0"
+  dependencies:
+    "@ethersproject/logger": ^5.7.0
+  checksum: 66ad365ceaab5da1b23b72225c71dce472cf37737af5118181fa8ab7447d696bea15ca22e3a0e8836fdd8cfac161afe321a7c67d0dde96f9f645ddd759676621
+  languageName: node
+  linkType: hard
+
+"@ethersproject/constants@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/constants@npm:5.7.0"
+  dependencies:
+    "@ethersproject/bignumber": ^5.7.0
+  checksum: 6d4b1355747cce837b3e76ec3bde70e4732736f23b04f196f706ebfa5d4d9c2be50904a390d4d40ce77803b98d03d16a9b6898418e04ba63491933ce08c4ba8a
+  languageName: node
+  linkType: hard
+
+"@ethersproject/contracts@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/contracts@npm:5.7.0"
+  dependencies:
+    "@ethersproject/abi": ^5.7.0
+    "@ethersproject/abstract-provider": ^5.7.0
+    "@ethersproject/abstract-signer": ^5.7.0
+    "@ethersproject/address": ^5.7.0
+    "@ethersproject/bignumber": ^5.7.0
+    "@ethersproject/bytes": ^5.7.0
+    "@ethersproject/constants": ^5.7.0
+    "@ethersproject/logger": ^5.7.0
+    "@ethersproject/properties": ^5.7.0
+    "@ethersproject/transactions": ^5.7.0
+  checksum: 6ccf1121cba01b31e02f8c507cb971ab6bfed85706484a9ec09878ef1594a62215f43c4fdef8f4a4875b99c4a800bc95e3be69b1803f8ce479e07634b5a740c0
+  languageName: node
+  linkType: hard
+
+"@ethersproject/hash@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/hash@npm:5.7.0"
+  dependencies:
+    "@ethersproject/abstract-signer": ^5.7.0
+    "@ethersproject/address": ^5.7.0
+    "@ethersproject/base64": ^5.7.0
+    "@ethersproject/bignumber": ^5.7.0
+    "@ethersproject/bytes": ^5.7.0
+    "@ethersproject/keccak256": ^5.7.0
+    "@ethersproject/logger": ^5.7.0
+    "@ethersproject/properties": ^5.7.0
+    "@ethersproject/strings": ^5.7.0
+  checksum: 6e9fa8d14eb08171cd32f17f98cc108ec2aeca74a427655f0d689c550fee0b22a83b3b400fad7fb3f41cf14d4111f87f170aa7905bcbcd1173a55f21b06262ef
+  languageName: node
+  linkType: hard
+
+"@ethersproject/keccak256@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/keccak256@npm:5.7.0"
+  dependencies:
+    "@ethersproject/bytes": ^5.7.0
+    js-sha3: 0.8.0
+  checksum: ff70950d82203aab29ccda2553422cbac2e7a0c15c986bd20a69b13606ed8bb6e4fdd7b67b8d3b27d4f841e8222cbaccd33ed34be29f866fec7308f96ed244c6
+  languageName: node
+  linkType: hard
+
+"@ethersproject/logger@npm:^5.7.0":
+  version: 5.7.0
+  resolution: "@ethersproject/logger@npm:5.7.0"
+  checksum: 075ab2f605f1fd0813f2e39c3308f77b44a67732b36e712d9bc085f22a84aac4da4f71b39bee50fe78da3e1c812673fadc41180c9970fe5e486e91ea17befe0d
+  languageName: node
+  linkType: hard
+
+"@ethersproject/networks@npm:^5.7.0":
+  version: 5.7.1
+  resolution: "@ethersproject/networks@npm:5.7.1"
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