diff --git a/package.json b/package.json
index 9920230..56987c3 100644
--- a/package.json
+++ b/package.json
@@ -18,10 +18,10 @@
   ],
   "dependencies": {
     "async-mutex": "^0.2.4",
+    "bn.js": "^5.1.3",
     "ethers": "^5.0.17",
     "gas-price-oracle": "^0.1.5",
-    "web3-core-promievent": "^1.3.0",
-    "web3-utils": "^1.3.0"
+    "web3-core-promievent": "^1.3.0"
   },
   "devDependencies": {
     "chai": "^4.2.0",
diff --git a/src/Transaction.js b/src/Transaction.js
index a9bfb90..ba2455a 100644
--- a/src/Transaction.js
+++ b/src/Transaction.js
@@ -1,7 +1,8 @@
 const ethers = require('ethers')
-const { toWei, toHex, toBN, BN, fromWei } = require('web3-utils')
+const { parseUnits, formatUnits } = ethers.utils
+const BigNumber = ethers.BigNumber
 const PromiEvent = require('web3-core-promievent')
-const { sleep } = require('./utils')
+const { sleep, min, max } = require('./utils')
 
 // prettier-ignore
 const nonceErrors = [
@@ -284,7 +285,9 @@ class Transaction {
 
       // there is already a pending tx with higher gas price, trying to bump and resubmit
       if (this._hasError(message, gasPriceErrors)) {
-        console.log(`Gas price ${fromWei(this.tx.gasPrice, 'gwei')} gwei is too low, increasing and retrying`)
+        console.log(
+          `Gas price ${formatUnits(this.tx.gasPrice, 'gwei')} gwei is too low, increasing and retrying`,
+        )
         this._increaseGasPrice()
         return this._send()
       }
@@ -311,19 +314,19 @@ class Transaction {
   }
 
   _increaseGasPrice() {
-    const minGweiBump = toBN(toWei(this.config.MIN_GWEI_BUMP.toString(), 'Gwei'))
-    const oldGasPrice = toBN(this.tx.gasPrice)
-    const newGasPrice = BN.max(
-      oldGasPrice.mul(toBN(100 + this.config.GAS_BUMP_PERCENTAGE)).div(toBN(100)),
+    const minGweiBump = parseUnits(this.config.MIN_GWEI_BUMP.toString(), 'gwei')
+    const oldGasPrice = BigNumber.from(this.tx.gasPrice)
+    const newGasPrice = max(
+      oldGasPrice.mul(100 + this.config.GAS_BUMP_PERCENTAGE).div(100),
       oldGasPrice.add(minGweiBump),
     )
-    const maxGasPrice = toBN(toWei(this.config.MAX_GAS_PRICE.toString(), 'gwei'))
-    if (toBN(this.tx.gasPrice).eq(maxGasPrice)) {
+    const maxGasPrice = parseUnits(this.config.MAX_GAS_PRICE.toString(), 'gwei')
+    if (oldGasPrice.eq(maxGasPrice)) {
       console.log('Already at max gas price, not bumping')
       return false
     }
-    this.tx.gasPrice = toHex(BN.min(newGasPrice, maxGasPrice))
-    console.log(`Increasing gas price to ${fromWei(this.tx.gasPrice, 'gwei')} gwei`)
+    this.tx.gasPrice = min(newGasPrice, maxGasPrice).toHexString()
+    console.log(`Increasing gas price to ${formatUnits(this.tx.gasPrice, 'gwei')} gwei`)
     return true
   }
 
@@ -338,7 +341,7 @@ class Transaction {
     const gasPrices = await this._gasPriceOracle.gasPrices()
     const result = gasPrices[type].toString()
     console.log(`${type} gas price is now ${result} gwei`)
-    return toHex(toWei(gasPrices[type].toString(), 'gwei'))
+    return parseUnits(gasPrices[type], 'gwei').toHexString()
   }
 
   /**
diff --git a/src/utils.js b/src/utils.js
index 7cb42e5..b2929d1 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -1,8 +1,17 @@
+const BN = require('bn.js')
+const { BigNumber } = require('ethers')
+
 /**
  * A promise that resolves after `ms` milliseconds
  */
 const sleep = ms => new Promise(res => setTimeout(res, ms))
 
+const max = (a, b) => BigNumber.from(BN.max(new BN(a.toString()), new BN(b.toString())).toString())
+
+const min = (a, b) => BigNumber.from(BN.min(new BN(a.toString()), new BN(b.toString())).toString())
+
 module.exports = {
   sleep,
+  max,
+  min,
 }
diff --git a/test/TxManager.test.js b/test/TxManager.test.js
index 390d097..5838da5 100644
--- a/test/TxManager.test.js
+++ b/test/TxManager.test.js
@@ -1,6 +1,6 @@
 require('dotenv').config()
 require('chai').should()
-const { toHex, toWei } = require('web3-utils')
+const { parseUnits } = require('ethers').utils
 const TxManager = require('../src/TxManager')
 // const Transaction = require('../src/Transaction')
 const { RPC_URL, PRIVATE_KEY } = process.env
@@ -17,13 +17,13 @@ describe('TxManager', () => {
 
   const tx1 = {
     value: 1,
-    gasPrice: toHex(toWei('1', 'gwei')),
+    gasPrice: parseUnits('1', 'gwei').toHexString(),
     to: '0xA43Ce8Cc89Eff3AA5593c742fC56A30Ef2427CB0',
   }
 
   const tx2 = {
     value: 1,
-    gasPrice: toHex(toWei('0.5', 'gwei')),
+    gasPrice: parseUnits('0.5', 'gwei').toHexString(),
     to: '0xA43Ce8Cc89Eff3AA5593c742fC56A30Ef2427CB0',
   }
 
diff --git a/yarn.lock b/yarn.lock
index 1281b85..7d32ee0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -588,16 +588,16 @@ binary-extensions@^2.0.0:
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-2.1.0.tgz#30fa40c9e7fe07dbc895678cd287024dea241dd9"
   integrity sha512-1Yj8h9Q+QDF5FzhMs/c9+6UntbD5MkRfRwac8DoEm9ZfUBZ7tZ55YcGVAzEe4bXsdQHEk+s9S5wsOKVdZrw0tQ==
 
-bn.js@4.11.6:
-  version "4.11.6"
-  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
-  integrity sha1-UzRK2xRhehP26N0s4okF0cC6MhU=
-
-bn.js@^4.11.6, bn.js@^4.11.9, bn.js@^4.4.0:
+bn.js@^4.4.0:
   version "4.11.9"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.9.tgz#26d556829458f9d1e81fc48952493d0ba3507828"
   integrity sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==
 
+bn.js@^5.1.3:
+  version "5.1.3"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-5.1.3.tgz#beca005408f642ebebea80b042b4d18d2ac0ee6b"
+  integrity sha512-GkTiFpjFtUzU9CbMeJ5iazkCzGL3jrhzerzZIuqLABjbwRaFt33I9tUdSNryIptM+RxDet6OKm2WnLXzW51KsQ==
+
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
@@ -623,11 +623,6 @@ browser-stdout@1.3.1:
   resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.1.tgz#baa559ee14ced73452229bad7326467c61fabd60"
   integrity sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==
 
-buffer-to-arraybuffer@^0.0.5:
-  version "0.0.5"
-  resolved "https://registry.yarnpkg.com/buffer-to-arraybuffer/-/buffer-to-arraybuffer-0.0.5.tgz#6064a40fa76eb43c723aba9ef8f6e1216d10511a"
-  integrity sha1-YGSkD6dutDxyOrqe+PbhIW0QURo=
-
 callsites@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/callsites/-/callsites-3.1.0.tgz#b3630abd8943432f54b3f0519238e33cd7df2f73"
@@ -760,18 +755,6 @@ decamelize@^1.2.0:
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
   integrity sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=
 
-decode-uri-component@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
-  integrity sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
-
-decompress-response@^3.3.0:
-  version "3.3.0"
-  resolved "https://registry.yarnpkg.com/decompress-response/-/decompress-response-3.3.0.tgz#80a4dd323748384bfa248083622aedec982adff3"
-  integrity sha1-gKTdMjdIOEv6JICDYirt7Jgq3/M=
-  dependencies:
-    mimic-response "^1.0.0"
-
 deep-eql@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/deep-eql/-/deep-eql-3.0.1.tgz#dfc9404400ad1c8fe023e7da1df1c147c4b444df"
@@ -803,17 +786,12 @@ doctrine@^3.0.0:
   dependencies:
     esutils "^2.0.2"
 
-dom-walk@^0.1.0:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/dom-walk/-/dom-walk-0.1.2.tgz#0c548bef048f4d1f2a97249002236060daa3fd84"
-  integrity sha512-6QvTW9mrGeIegrFXdtQi9pk7O/nSK6lSdXW2eqUspN5LWD7UTji2Fqw5V2YLjBpHEoU9Xl/eUWNpDeZvoyOv2w==
-
 dotenv@^8.2.0:
   version "8.2.0"
   resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-8.2.0.tgz#97e619259ada750eea3e4ea3e26bceea5424b16a"
   integrity sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw==
 
-elliptic@6.5.3, elliptic@^6.4.0:
+elliptic@6.5.3:
   version "6.5.3"
   resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.3.tgz#cb59eb2efdaf73a0bd78ccd7015a62ad6e0f93d6"
   integrity sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==
@@ -1030,22 +1008,6 @@ esutils@^2.0.2:
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.3.tgz#74d2eb4de0b8da1293711910d50775b9b710ef64"
   integrity sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==
 
-eth-lib@0.2.8:
-  version "0.2.8"
-  resolved "https://registry.yarnpkg.com/eth-lib/-/eth-lib-0.2.8.tgz#b194058bef4b220ad12ea497431d6cb6aa0623c8"
-  integrity sha512-ArJ7x1WcWOlSpzdoTBX8vkwlkSQ85CjjifSZtV4co64vWxSV8geWfPI9x4SVYu3DSxnX4yWFVTtGL+j9DUFLNw==
-  dependencies:
-    bn.js "^4.11.6"
-    elliptic "^6.4.0"
-    xhr-request-promise "^0.1.2"
-
-ethereum-bloom-filters@^1.0.6:
-  version "1.0.7"
-  resolved "https://registry.yarnpkg.com/ethereum-bloom-filters/-/ethereum-bloom-filters-1.0.7.tgz#b7b80735e385dbb7f944ce6b4533e24511306060"
-  integrity sha512-cDcJJSJ9GMAcURiAWO3DxIEhTL/uWqlQnvgKpuYQzYPrt/izuGU+1ntQmHt0IRq6ADoSYHFnB+aCEFIldjhkMQ==
-  dependencies:
-    js-sha3 "^0.8.0"
-
 ethers@^5.0.17:
   version "5.0.17"
   resolved "https://registry.yarnpkg.com/ethers/-/ethers-5.0.17.tgz#35dea41f1d09d31f80e0bb4c03cb633cd6673756"
@@ -1082,14 +1044,6 @@ ethers@^5.0.17:
     "@ethersproject/web" "5.0.9"
     "@ethersproject/wordlists" "5.0.5"
 
-ethjs-unit@0.1.6:
-  version "0.1.6"
-  resolved "https://registry.yarnpkg.com/ethjs-unit/-/ethjs-unit-0.1.6.tgz#c665921e476e87bce2a9d588a6fe0405b2c41699"
-  integrity sha1-xmWSHkduh7ziqdWIpv4EBbLEFpk=
-  dependencies:
-    bn.js "4.11.6"
-    number-to-bn "1.7.0"
-
 eventemitter3@4.0.4:
   version "4.0.4"
   resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-4.0.4.tgz#b5463ace635a083d018bdc7c917b4c5f10a85384"
@@ -1234,14 +1188,6 @@ glob@7.1.6, glob@^7.1.3:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-global@~4.3.0:
-  version "4.3.2"
-  resolved "https://registry.yarnpkg.com/global/-/global-4.3.2.tgz#e76989268a6c74c38908b1305b10fc0e394e9d0f"
-  integrity sha1-52mJJopsdMOJCLEwWxD8DjlOnQ8=
-  dependencies:
-    min-document "^2.19.0"
-    process "~0.5.1"
-
 globals@^12.1.0:
   version "12.4.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-12.4.0.tgz#a18813576a41b00a24a97e7f815918c2e19925f8"
@@ -1374,11 +1320,6 @@ is-fullwidth-code-point@^2.0.0:
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
   integrity sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=
 
-is-function@^1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/is-function/-/is-function-1.0.2.tgz#4f097f30abf6efadac9833b17ca5dc03f8144e08"
-  integrity sha512-lw7DUp0aWXYg+CBCN+JKkcE0Q2RayZnSvnZBlwgxHBQhqt5pZNVy4Ri7H9GmmXkdu7LUthszM+Tor1u/2iBcpQ==
-
 is-glob@^4.0.0, is-glob@^4.0.1, is-glob@~4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.1.tgz#7567dbe9f2f5e2467bc77ab83c4a29482407a5dc"
@@ -1386,11 +1327,6 @@ is-glob@^4.0.0, is-glob@^4.0.1, is-glob@~4.0.1:
   dependencies:
     is-extglob "^2.1.1"
 
-is-hex-prefixed@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/is-hex-prefixed/-/is-hex-prefixed-1.0.0.tgz#7d8d37e6ad77e5d127148913c573e082d777f554"
-  integrity sha1-fY035q135dEnFIkTxXPggtd39VQ=
-
 is-map@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/is-map/-/is-map-2.0.1.tgz#520dafc4307bb8ebc33b813de5ce7c9400d644a1"
@@ -1463,11 +1399,6 @@ js-sha3@0.5.7:
   resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.5.7.tgz#0d4ffd8002d5333aabaf4a23eed2f6374c9f28e7"
   integrity sha1-DU/9gALVMzqrr0oj7tL2N0yfKOc=
 
-js-sha3@^0.8.0:
-  version "0.8.0"
-  resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.8.0.tgz#b9b7a5da73afad7dedd0f8c463954cbde6818840"
-  integrity sha512-gF1cRrHhIzNfToc802P800N8PpXS+evLLXfsVpowqmAFR9uwbi89WvXg2QspOmXL8QL86J4T1EpFu+yUkwJY3Q==
-
 js-tokens@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
@@ -1526,18 +1457,6 @@ log-symbols@4.0.0:
   dependencies:
     chalk "^4.0.0"
 
-mimic-response@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
-  integrity sha512-j5EctnkH7amfV/q5Hgmoal1g2QHFJRraOtmx0JpIqkxhBhI/lJSl1nMpQ45hVarwNETOoWEimndZ4QK0RHxuxQ==
-
-min-document@^2.19.0:
-  version "2.19.0"
-  resolved "https://registry.yarnpkg.com/min-document/-/min-document-2.19.0.tgz#7bd282e3f5842ed295bb748cdd9f1ffa2c824685"
-  integrity sha1-e9KC4/WELtKVu3SM3Z8f+iyCRoU=
-  dependencies:
-    dom-walk "^0.1.0"
-
 minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
@@ -1618,19 +1537,6 @@ normalize-path@^3.0.0, normalize-path@~3.0.0:
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
   integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
 
-number-to-bn@1.7.0:
-  version "1.7.0"
-  resolved "https://registry.yarnpkg.com/number-to-bn/-/number-to-bn-1.7.0.tgz#bb3623592f7e5f9e0030b1977bd41a0c53fe1ea0"
-  integrity sha1-uzYjWS9+X54AMLGXe9QaDFP+HqA=
-  dependencies:
-    bn.js "4.11.6"
-    strip-hex-prefix "1.0.0"
-
-object-assign@^4.1.0, object-assign@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
-  integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
-
 object-inspect@^1.8.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.8.0.tgz#df807e5ecf53a609cc6bfe93eac3cc7be5b3a9d0"
@@ -1661,7 +1567,7 @@ object.assign@^4.1.1:
     has-symbols "^1.0.1"
     object-keys "^1.1.1"
 
-once@^1.3.0, once@^1.3.1:
+once@^1.3.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
   integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
@@ -1720,11 +1626,6 @@ parent-module@^1.0.0:
   dependencies:
     callsites "^3.0.0"
 
-parse-headers@^2.0.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/parse-headers/-/parse-headers-2.0.3.tgz#5e8e7512383d140ba02f0c7aa9f49b4399c92515"
-  integrity sha512-QhhZ+DCCit2Coi2vmAKbq5RGTRcQUOE2+REgv8vdyu7MnYx2eZztegqtTx99TZ86GTIwqiy3+4nQTWZ2tgmdCA==
-
 path-exists@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
@@ -1772,11 +1673,6 @@ prettier@^2.1.2:
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.1.2.tgz#3050700dae2e4c8b67c4c3f666cdb8af405e1ce5"
   integrity sha512-16c7K+x4qVlJg9rEbXl7HEGmQyZlG4R9AgP+oHKRMsMsuk8s+ATStlf1NpDqyBI1HpVyfjLOeMhH2LvuNvV5Vg==
 
-process@~0.5.1:
-  version "0.5.2"
-  resolved "https://registry.yarnpkg.com/process/-/process-0.5.2.tgz#1638d8a8e34c2f440a91db95ab9aeb677fc185cf"
-  integrity sha1-FjjYqONML0QKkduVq5rrZ3/Bhc8=
-
 progress@^2.0.0:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.3.tgz#7e8cf8d8f5b8f239c1bc68beb4eb78567d572ef8"
@@ -1798,15 +1694,6 @@ punycode@^2.1.0:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
   integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
 
-query-string@^5.0.1:
-  version "5.1.1"
-  resolved "https://registry.yarnpkg.com/query-string/-/query-string-5.1.1.tgz#a78c012b71c17e05f2e3fa2319dd330682efb3cb"
-  integrity sha512-gjWOsm2SoGlgLEdAGt7a6slVOk9mGiXmPFMqrEhLQ68rhQuBnpfs3+EmlvqKyxnCo9/PPlF+9MtY02S1aFg+Jw==
-  dependencies:
-    decode-uri-component "^0.2.0"
-    object-assign "^4.1.0"
-    strict-uri-encode "^1.0.0"
-
 randombytes@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.1.0.tgz#df6f84372f0270dc65cdf6291349ab7a473d4f2a"
@@ -1892,20 +1779,6 @@ siginfo@^2.0.0:
   resolved "https://registry.yarnpkg.com/siginfo/-/siginfo-2.0.0.tgz#32e76c70b79724e3bb567cb9d543eb858ccfaf30"
   integrity sha512-ybx0WO1/8bSBLEWXZvEd7gMW3Sn3JFlW3TvX1nREbDLRNQNaeNN8WK0meBwPdAaOI7TtRRRJn/Es1zhrrCHu7g==
 
-simple-concat@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/simple-concat/-/simple-concat-1.0.1.tgz#f46976082ba35c2263f1c8ab5edfe26c41c9552f"
-  integrity sha512-cSFtAPtRhljv69IK0hTVZQ+OfE9nePi/rtJmw5UjHeVyVroEqJXP1sFztKUy1qU+xvz3u/sfYJLa947b7nAN2Q==
-
-simple-get@^2.7.0:
-  version "2.8.1"
-  resolved "https://registry.yarnpkg.com/simple-get/-/simple-get-2.8.1.tgz#0e22e91d4575d87620620bc91308d57a77f44b5d"
-  integrity sha512-lSSHRSw3mQNUGPAYRqo7xy9dhKmxFXIjLjp4KHpf99GEH2VH7C3AM+Qfx6du6jhfUi6Vm7XnbEVEf7Wb6N8jRw==
-  dependencies:
-    decompress-response "^3.3.0"
-    once "^1.3.1"
-    simple-concat "^1.0.0"
-
 slice-ansi@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-2.1.0.tgz#cacd7693461a637a5788d92a7dd4fba068e81636"
@@ -1925,11 +1798,6 @@ stackback@0.0.2:
   resolved "https://registry.yarnpkg.com/stackback/-/stackback-0.0.2.tgz#1ac8a0d9483848d1695e418b6d031a3c3ce68e3b"
   integrity sha1-Gsig2Ug4SNFpXkGLbQMaPDzmjjs=
 
-strict-uri-encode@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz#279b225df1d582b1f54e65addd4352e18faa0713"
-  integrity sha1-J5siXfHVgrH1TmWt3UNS4Y+qBxM=
-
 "string-width@^1.0.2 || 2":
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
@@ -1984,13 +1852,6 @@ strip-ansi@^6.0.0:
   dependencies:
     ansi-regex "^5.0.0"
 
-strip-hex-prefix@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/strip-hex-prefix/-/strip-hex-prefix-1.0.0.tgz#0c5f155fef1151373377de9dbb588da05500e36f"
-  integrity sha1-DF8VX+8RUTczd96du1iNoFUA428=
-  dependencies:
-    is-hex-prefixed "1.0.0"
-
 strip-json-comments@3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-3.0.1.tgz#85713975a91fb87bf1b305cca77395e40d2a64a7"
@@ -2037,11 +1898,6 @@ text-table@^0.2.0:
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
   integrity sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=
 
-timed-out@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/timed-out/-/timed-out-4.0.1.tgz#f32eacac5a175bea25d7fab565ab3ed8741ef56f"
-  integrity sha1-8y6srFoXW+ol1/q1Zas+2HQe9W8=
-
 to-regex-range@^5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/to-regex-range/-/to-regex-range-5.0.1.tgz#1648c44aae7c8d988a326018ed72f5b4dd0392e4"
@@ -2071,11 +1927,6 @@ type-fest@^0.8.1:
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
   integrity sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==
 
-underscore@1.9.1:
-  version "1.9.1"
-  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.9.1.tgz#06dce34a0e68a7babc29b365b8e74b8925203961"
-  integrity sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg==
-
 uri-js@^4.2.2:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.0.tgz#aa714261de793e8a82347a7bcc9ce74e86f28602"
@@ -2083,16 +1934,6 @@ uri-js@^4.2.2:
   dependencies:
     punycode "^2.1.0"
 
-url-set-query@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/url-set-query/-/url-set-query-1.0.0.tgz#016e8cfd7c20ee05cafe7795e892bd0702faa339"
-  integrity sha1-AW6M/Xwg7gXK/neV6JK9BwL6ozk=
-
-utf8@3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/utf8/-/utf8-3.0.0.tgz#f052eed1364d696e769ef058b183df88c87f69d1"
-  integrity sha512-E8VjFIQ/TyQgp+TZfS6l8yp/xWppSAHzidGiRrqe4bK4XP9pTRyKFgGJpO3SN7zdX4DeomTrwaseCHovfpFcqQ==
-
 v8-compile-cache@^2.0.3:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/v8-compile-cache/-/v8-compile-cache-2.1.1.tgz#54bc3cdd43317bca91e35dcaf305b1a7237de745"
@@ -2105,20 +1946,6 @@ web3-core-promievent@^1.3.0:
   dependencies:
     eventemitter3 "4.0.4"
 
-web3-utils@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.3.0.tgz#5bac16e5e0ec9fe7bdcfadb621655e8aa3cf14e1"
-  integrity sha512-2mS5axFCbkhicmoDRuJeuo0TVGQDgC2sPi/5dblfVC+PMtX0efrb8Xlttv/eGkq7X4E83Pds34FH98TP2WOUZA==
-  dependencies:
-    bn.js "^4.11.9"
-    eth-lib "0.2.8"
-    ethereum-bloom-filters "^1.0.6"
-    ethjs-unit "0.1.6"
-    number-to-bn "1.7.0"
-    randombytes "^2.1.0"
-    underscore "1.9.1"
-    utf8 "3.0.0"
-
 which-module@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
@@ -2182,41 +2009,6 @@ ws@7.2.3:
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.2.3.tgz#a5411e1fb04d5ed0efee76d26d5c46d830c39b46"
   integrity sha512-HTDl9G9hbkNDk98naoR/cHDws7+EyYMOdL1BmjsZXRUjf7d+MficC4B7HLUPlSiho0vg+CWKrGIt/VJBd1xunQ==
 
-xhr-request-promise@^0.1.2:
-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/xhr-request-promise/-/xhr-request-promise-0.1.3.tgz#2d5f4b16d8c6c893be97f1a62b0ed4cf3ca5f96c"
-  integrity sha512-YUBytBsuwgitWtdRzXDDkWAXzhdGB8bYm0sSzMPZT7Z2MBjMSTHFsyCT1yCRATY+XC69DUrQraRAEgcoCRaIPg==
-  dependencies:
-    xhr-request "^1.1.0"
-
-xhr-request@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/xhr-request/-/xhr-request-1.1.0.tgz#f4a7c1868b9f198723444d82dcae317643f2e2ed"
-  integrity sha512-Y7qzEaR3FDtL3fP30k9wO/e+FBnBByZeybKOhASsGP30NIkRAAkKD/sCnLvgEfAIEC1rcmK7YG8f4oEnIrrWzA==
-  dependencies:
-    buffer-to-arraybuffer "^0.0.5"
-    object-assign "^4.1.1"
-    query-string "^5.0.1"
-    simple-get "^2.7.0"
-    timed-out "^4.0.1"
-    url-set-query "^1.0.0"
-    xhr "^2.0.4"
-
-xhr@^2.0.4:
-  version "2.5.0"
-  resolved "https://registry.yarnpkg.com/xhr/-/xhr-2.5.0.tgz#bed8d1676d5ca36108667692b74b316c496e49dd"
-  integrity sha512-4nlO/14t3BNUZRXIXfXe+3N6w3s1KoxcJUUURctd64BLRe67E4gRwp4PjywtDY72fXpZ1y6Ch0VZQRY/gMPzzQ==
-  dependencies:
-    global "~4.3.0"
-    is-function "^1.0.1"
-    parse-headers "^2.0.0"
-    xtend "^4.0.0"
-
-xtend@^4.0.0:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
-  integrity sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==
-
 y18n@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"