diff --git a/package-lock.json b/package-lock.json
index 68ed37f..cd99029 100644
--- a/package-lock.json
+++ b/package-lock.json
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-      "resolved": "https://registry.npmjs.org/yeoman-environment/-/yeoman-environment-2.2.0.tgz",
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-        "chalk": "^2.1.0",
-        "cross-spawn": "^6.0.5",
-        "debug": "^3.1.0",
-        "diff": "^3.3.1",
-        "escape-string-regexp": "^1.0.2",
-        "globby": "^8.0.1",
-        "grouped-queue": "^0.3.3",
-        "inquirer": "^5.2.0",
-        "is-scoped": "^1.0.0",
-        "lodash": "^4.17.10",
-        "log-symbols": "^2.1.0",
-        "mem-fs": "^1.1.0",
-        "strip-ansi": "^4.0.0",
-        "text-table": "^0.2.0",
-        "untildify": "^3.0.2"
-      },
-      "dependencies": {
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-          "version": "3.1.0",
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-            "ms": "2.0.0"
-          }
-        }
-      }
-    },
-    "yeoman-generator": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/yeoman-generator/-/yeoman-generator-2.0.5.tgz",
-      "integrity": "sha512-rV6tJ8oYzm4mmdF2T3wjY+Q42jKF2YiiD0VKfJ8/0ZYwmhCKC9Xs2346HVLPj/xE13i68psnFJv7iS6gWRkeAg==",
-      "requires": {
-        "async": "^2.6.0",
-        "chalk": "^2.3.0",
-        "cli-table": "^0.3.1",
-        "cross-spawn": "^6.0.5",
-        "dargs": "^5.1.0",
-        "dateformat": "^3.0.3",
-        "debug": "^3.1.0",
-        "detect-conflict": "^1.0.0",
-        "error": "^7.0.2",
-        "find-up": "^2.1.0",
-        "github-username": "^4.0.0",
-        "istextorbinary": "^2.2.1",
-        "lodash": "^4.17.10",
-        "make-dir": "^1.1.0",
-        "mem-fs-editor": "^4.0.0",
-        "minimist": "^1.2.0",
-        "pretty-bytes": "^4.0.2",
-        "read-chunk": "^2.1.0",
-        "read-pkg-up": "^3.0.0",
-        "rimraf": "^2.6.2",
-        "run-async": "^2.0.0",
-        "shelljs": "^0.8.0",
-        "text-table": "^0.2.0",
-        "through2": "^2.0.0",
-        "yeoman-environment": "^2.0.5"
-      },
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-          "resolved": "https://registry.npmjs.org/async/-/async-2.6.1.tgz",
-          "integrity": "sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==",
-          "requires": {
-            "lodash": "^4.17.10"
-          }
-        },
-        "debug": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
-          "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
-          "requires": {
-            "ms": "2.0.0"
-          }
-        },
-        "minimist": {
-          "version": "1.2.0",
-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
-        },
-        "rimraf": {
-          "version": "2.6.2",
-          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
-          "integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
-          "requires": {
-            "glob": "^7.0.5"
-          }
-        }
-      }
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
+      "dev": true
     }
   }
 }
diff --git a/package.json b/package.json
index 8064d85..b0a1988 100644
--- a/package.json
+++ b/package.json
@@ -32,15 +32,11 @@
   "dependencies": {
     "app-root-path": "^2.0.1",
     "frg-ethereum-runners": "git+ssh://git@github.com/frgprotocol/frg-ethereum-runners.git#master",
-    "ganache-cli": "^6.1.0",
     "js-yaml": "^3.11.0",
-    "lodash": "^4.17.5",
     "openzeppelin-solidity": "1.10.0",
-    "truffle": "^4.1.13",
-    "web3": "github:ethereum/web3.js"
+    "truffle": "^4.1.13"
   },
   "devDependencies": {
-    "bignumber.js": "git+https://github.com/frozeman/bignumber.js-nolookahead.git",
     "coveralls": "^3.0.2",
     "eslint": "^4.19.1",
     "eslint-config-google": "^0.9.1",
@@ -50,18 +46,13 @@
     "eslint-plugin-chai-friendly": "^0.4.1",
     "eslint-plugin-import": "^1.16.0",
     "eslint-plugin-mocha-only": "0.0.3",
-    "eslint-plugin-node": "^6.0.1",
     "eslint-plugin-prettier": "^2.6.0",
     "eslint-plugin-promise": "^1.3.2",
     "eslint-plugin-spellcheck": "0.0.10",
     "eslint-plugin-standard": "^1.3.3",
     "pre-commit": "^1.2.2",
     "prettier": "^1.12.1",
-    "request": "^2.87.0",
-    "request-promise": "^4.2.2",
-    "sinon": "^4.5.0",
     "solhint": "^1.1.10",
-    "solidity-coverage": "0.5.8",
-    "webpack": "^4.10.2"
+    "solidity-coverage": "0.5.8"
   }
 }
diff --git a/test/unit/market_oracle.js b/test/unit/market_oracle.js
index d80f234..0687bfe 100644
--- a/test/unit/market_oracle.js
+++ b/test/unit/market_oracle.js
@@ -41,7 +41,7 @@ contract('MarketOracle:addSource', async function (accounts) {
     });
 
     it('should emit SourceAdded message', async function () {
-      const logs = chain.decodeLogs(r.receipt.logs, MarketOracle, oracle.address);
+      const logs = r.logs;
       const event = logs[0];
       expect(event.event).to.eq('LogSourceAdded');
       expect(event.args.source).to.eq(source.address);
@@ -82,7 +82,7 @@ contract('MarketOracle:removeSource', async function (accounts) {
     });
 
     it('should emit SourceRemoved message', async function () {
-      const logs = chain.decodeLogs(r.receipt.logs, MarketOracle, oracle.address);
+      const logs = r.logs;
       const event = logs[0];
       expect(event.event).to.eq('LogSourceRemoved');
       expect(event.args.source).to.eq(source.address);
@@ -105,7 +105,7 @@ contract('MarketOracle:removeSource', async function (accounts) {
     });
 
     it('should NOT emit SourceRemoved message', async function () {
-      const logs = chain.decodeLogs(r.receipt.logs, MarketOracle, oracle.address);
+      const logs = r.logs;
       expect(logs).to.be.empty;
     });
     it('should NOT remove source any from the whitelist', async function () {
@@ -165,7 +165,7 @@ contract('MarketOracle:getPriceAnd24HourVolume', async function (accounts) {
 
     it('should emit SourceExpired message', async function () {
       const resp = await oracle.getPriceAnd24HourVolume();
-      const logs = chain.decodeLogs(resp.receipt.logs, MarketOracle, oracle.address);
+      const logs = resp.logs;
       const event = logs[0];
       expect(event.event).to.eq('LogSourceExpired');
       expect(event.args.source).to.eq(source2.address);
@@ -208,7 +208,7 @@ contract('MarketOracle:removeDestructedSources', async function (accounts) {
     });
 
     it('should emit SourceRemoved message', async function () {
-      const logs = chain.decodeLogs(r.receipt.logs, MarketOracle, oracle.address);
+      const logs = r.logs;
       const event = logs[0];
       expect(event.event).to.eq('LogSourceRemoved');
       expect(event.args.source).to.eq(source2.address);
@@ -232,7 +232,7 @@ contract('MarketOracle:removeDestructedSources', async function (accounts) {
     });
 
     it('should NOT emit SourceRemoved message', async function () {
-      const logs = chain.decodeLogs(r.receipt.logs, MarketOracle, oracle.address);
+      const logs = r.logs;
       expect(logs).to.be.empty;
     });
     it('should NOT remove any source from the whitelist', async function () {
diff --git a/util/blockchain_caller.js b/util/blockchain_caller.js
index 506be84..37966e2 100644
--- a/util/blockchain_caller.js
+++ b/util/blockchain_caller.js
@@ -1,6 +1,4 @@
 // A wrapper on top of web3 to help interact with an underlying blockchain
-const SolidityEvent = require('web3/lib/web3/event.js');
-
 class BlockchainCaller {
   constructor (web3) {
     this._web3 = web3;
@@ -58,12 +56,4 @@ BlockchainCaller.prototype.isContract = async function (address) {
   return (code !== '0x0');
 };
 
-// Inspired from https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/test/helpers/decodeLogs.js
-BlockchainCaller.prototype.decodeLogs = function(logs, contract, address){
-  return logs.map(log => {
-    const event = new SolidityEvent(null, contract.events[log.topics[0]], address);
-    return event.decode(log);
-  });
-};
-
 module.exports = BlockchainCaller;