diff --git a/package-lock.json b/package-lock.json
index fbdf60d..34755f1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "ethjs-query",
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+  "version": "0.3.8",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -10,38 +10,13 @@
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       "dev": true,
       "requires": {
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+        "acorn": "^3.0.4"
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@@ -52,20 +27,14 @@
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-        "json-stable-stringify": "1.0.1"
+        "co": "^4.6.0",
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@@ -80,9 +49,9 @@
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-        "longest": "1.0.1",
-        "repeat-string": "1.6.1"
+        "kind-of": "^3.0.2",
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@@ -109,12 +78,6 @@
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@@ -122,8 +85,8 @@
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+        "micromatch": "^2.1.5",
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@@ -132,16 +95,10 @@
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       "dev": true,
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-        "underscore.string": "2.4.0"
+        "underscore": "~1.7.0",
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-      "resolved": "https://registry.npmjs.org/argsarray/-/argsarray-0.0.1.tgz",
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@@ -149,7 +106,7 @@
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+        "arr-flatten": "^1.0.1"
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@@ -170,19 +127,13 @@
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+        "array-uniq": "^1.0.1"
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-        "inherits": "2.0.3",
-        "minimalistic-assert": "1.0.0"
+        "bn.js": "^4.0.0",
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@@ -248,19 +199,13 @@
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       "dev": true,
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+        "lodash": "^4.14.0"
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@@ -269,27 +214,6 @@
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-      "dev": true,
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@@ -302,33 +226,27 @@
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-        "v8flags": "2.1.1"
+        "babel-core": "^6.18.0",
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+        "babel-register": "^6.18.0",
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+        "chokidar": "^1.0.0",
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+        "glob": "^5.0.5",
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+        "path-is-absolute": "^1.0.0",
+        "slash": "^1.0.0",
+        "source-map": "^0.5.0",
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@@ -337,9 +255,9 @@
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       "dev": true,
       "requires": {
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-        "esutils": "2.0.2",
-        "js-tokens": "3.0.2"
+        "chalk": "^1.1.3",
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@@ -348,25 +266,25 @@
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       "requires": {
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@@ -540,10 +423,10 @@
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-      "dev": true,
-      "requires": {
-        "camelcase": "3.0.0",
-        "cliui": "3.2.0",
-        "decamelize": "1.2.0",
-        "get-caller-file": "1.0.2",
-        "os-locale": "1.4.0",
-        "read-pkg-up": "1.0.1",
-        "require-directory": "2.1.1",
-        "require-main-filename": "1.0.1",
-        "set-blocking": "2.0.0",
-        "string-width": "1.0.2",
-        "which-module": "1.0.0",
-        "y18n": "3.2.1",
-        "yargs-parser": "4.2.1"
-      }
-    },
-    "yargs-parser": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-4.2.1.tgz",
-      "integrity": "sha1-KczqwNxPA8bIe0qfIX3RjJ90hxw=",
-      "dev": true,
-      "requires": {
-        "camelcase": "3.0.0"
-      }
-    },
-    "yauzl": {
-      "version": "2.9.1",
-      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.9.1.tgz",
-      "integrity": "sha1-qBmB6nCleUYTOIPwKcWCGok1mn8=",
-      "dev": true,
-      "requires": {
-        "buffer-crc32": "0.2.13",
-        "fd-slicer": "1.0.1"
-      }
     }
   }
 }
diff --git a/package.json b/package.json
index 933c064..561fcb8 100644
--- a/package.json
+++ b/package.json
@@ -117,10 +117,10 @@
     }
   },
   "dependencies": {
+    "babel-runtime": "^6.26.0",
     "ethjs-format": "0.2.7",
     "ethjs-rpc": "0.2.0",
-    "promise-to-callback": "^1.0.0",
-    "babel-runtime": "^6.26.0"
+    "promise-to-callback": "^1.0.0"
   },
   "devDependencies": {
     "babel-cli": "6.18.0",
@@ -151,7 +151,6 @@
     "babel-register": "6.18.0",
     "bignumber.js": "3.0.1",
     "chai": "3.5.0",
-    "check-es3-syntax-cli": "0.1.3",
     "coveralls": "2.11.9",
     "cross-env": "1.0.7",
     "eslint": "2.10.1",
@@ -161,7 +160,7 @@
     "eslint-plugin-jsx-a11y": "1.2.0",
     "eslint-plugin-react": "5.1.1",
     "ethjs-abi": "0.0.1",
-    "ganache-core": "^2.1.0",
+    "ganache-cli": "6.12.2",
     "hard-rejection": "^1.0.0",
     "istanbul": "0.4.5",
     "json-loader": "0.5.4",
diff --git a/src/tests/test.index.js b/src/tests/test.index.js
index 0b0e743..1c2b0de 100644
--- a/src/tests/test.index.js
+++ b/src/tests/test.index.js
@@ -3,7 +3,7 @@ const Eth = require('../index.js');
 const Eth2 = require('../index.js');
 const assert = require('chai').assert;
 const util = require('ethjs-util');
-const GanacheCore = require('ganache-core');
+const Ganache = require('ganache-cli');
 const BigNumber = require('bn.js');
 const abi = require('ethjs-abi');
 
@@ -11,7 +11,7 @@ describe('ethjs-query', () => {
   let provider;
 
   beforeEach(() => {
-    provider = GanacheCore.provider();
+    provider = Ganache.provider();
   });
 
   describe('construction', () => {
@@ -387,19 +387,6 @@ describe('ethjs-query', () => {
       done();
     });
 
-    it('should function while eth_getCompilers', (done) => {
-      const eth = new Eth(provider); // eslint-disable-line
-
-      eth.getCompilers((error, result) => {
-        assert.equal(error, null);
-        assert.equal(typeof result, 'object');
-        assert.equal(Array.isArray(result), true);
-        assert.equal(typeof result[0], 'string');
-
-        done();
-      });
-    });
-
     it('should function while eth_hashrate', (done) => {
       const eth = new Eth(provider); // eslint-disable-line