diff --git a/lib/config.js b/lib/config.js
index deeaf6d7d..5338906d2 100644
--- a/lib/config.js
+++ b/lib/config.js
@@ -284,7 +284,7 @@ var Config = function () {
   this.LOG_DEBUG = constant.LOG_DEBUG
 
   this.set = function (newConfig) {
-    _.merge(config, newConfig, function (obj, src) {
+    _.mergeWith(config, newConfig, function (obj, src) {
       // Overwrite arrays to keep consistent with #283
       if (_.isArray(src)) {
         return src
diff --git a/lib/helper.js b/lib/helper.js
index 76179d2c5..e0b32c8ac 100644
--- a/lib/helper.js
+++ b/lib/helper.js
@@ -166,11 +166,3 @@ exports.defer = function () {
     promise: promise
   }
 }
-
-// export lodash
-Object.defineProperty(exports, '_', {
-  get: function () {
-    console.log('DEPRECATED: use your own version of lodash, this will go away in karma@2.0')
-    return _
-  }
-})
diff --git a/package.json b/package.json
index df7ab1f9a..73f45f0f2 100644
--- a/package.json
+++ b/package.json
@@ -340,8 +340,8 @@
     "graceful-fs": "^4.1.2",
     "http-proxy": "^1.13.0",
     "isbinaryfile": "^3.0.0",
-    "lodash": "^3.8.0",
-    "log4js": "^0.6.31",
+    "lodash": "^4.17.4",
+    "log4js": "^1.1.1",
     "mime": "^1.3.4",
     "minimatch": "^3.0.2",
     "optimist": "^0.6.1",
@@ -363,12 +363,14 @@
     "chai-as-promised": "^6.0.0",
     "chai-subset": "^1.2.2",
     "coffee-script": "^1.12.4",
-    "cucumber": "^1.2.0",
+    "cucumber": "^2.2.0",
     "eslint": "^3.15.0",
-    "eslint-config-standard": "^7.0.0",
+    "eslint-config-standard": "^10.2.1",
+    "eslint-plugin-import": "^2.2.0",
+    "eslint-plugin-node": "^4.2.2",
     "eslint-plugin-promise": "^3.4.2",
-    "eslint-plugin-react": "^6.10.0",
-    "eslint-plugin-standard": "^2.0.1",
+    "eslint-plugin-react": "^7.0.1",
+    "eslint-plugin-standard": "^3.0.1",
     "grunt": "^1.0.0",
     "grunt-auto-release": "^0.0.7",
     "grunt-browserify": "^5.0.0",
@@ -414,7 +416,7 @@
     "proxyquire": "^1.7.11",
     "qunitjs": "^2.1.1",
     "requirejs": "^2.1.20",
-    "sinon": "^1.17.5",
+    "sinon": "^2.2.0",
     "sinon-chai": "^2.7.0",
     "supertest": "^3.0.0",
     "timer-shim": "^0.3.0",
diff --git a/test/unit/completion.spec.js b/test/unit/completion.spec.js
index c39217bc6..33f66ee9b 100644
--- a/test/unit/completion.spec.js
+++ b/test/unit/completion.spec.js
@@ -15,7 +15,7 @@ describe('completion', () => {
   }
 
   beforeEach(() => {
-    sinon.stub(console, 'log', (msg) => completion.push(msg))
+    sinon.stub(console, 'log').callsFake((msg) => completion.push(msg))
     completion = []
   })
 
diff --git a/test/unit/config.spec.js b/test/unit/config.spec.js
index 288343f54..0f2dc5783 100644
--- a/test/unit/config.spec.js
+++ b/test/unit/config.spec.js
@@ -1,5 +1,5 @@
-var loadFile = require('mocks').loadFile
 import path from 'path'
+var loadFile = require('mocks').loadFile
 var helper = require('../../lib/helper')
 var logger = require('../../lib/logger.js')
 
diff --git a/test/unit/file-list.spec.js b/test/unit/file-list.spec.js
index 53c1340ec..41bb58e48 100644
--- a/test/unit/file-list.spec.js
+++ b/test/unit/file-list.spec.js
@@ -13,7 +13,7 @@ import config from '../../lib/config'
 var patterns = (...strings) => strings.map((str) => new config.Pattern(str))
 
 function pathsFrom (files) {
-  return _.pluck(from(files), 'path')
+  return _.map(from(files), 'path')
 }
 
 function findFile (path, files) {
@@ -279,7 +279,7 @@ describe('FileList', () => {
 
     it('cancels refreshs', () => {
       var checkResult = (files) => {
-        expect(_.pluck(files.served, 'path')).to.contain('/some/a.js', '/some/b.js', '/some/c.js')
+        expect(_.map(files.served, 'path')).to.contain('/some/a.js', '/some/b.js', '/some/c.js')
       }
 
       var p1 = list.refresh().then(checkResult)
@@ -900,7 +900,7 @@ describe('FileList', () => {
       })
     })
 
-    it('waits while file preprocessing, if the file was deleted and immediately added', (done) => {
+    it('waits while file preprocessing, if the file was deleted and immediately added', () => {
       list = new List(patterns('/a.*'), [], emitter, preprocess, 100)
 
       list.refresh().then((files) => {
@@ -915,12 +915,25 @@ describe('FileList', () => {
 
         expect(preprocess).to.not.have.been.called
 
-        emitter.once('file_list_modified', () => _.defer(() => {
-          expect(preprocess).to.have.been.calledOnce
-          done()
-        }))
+        var promise = new Promise((resolve) => {
+          emitter.once('file_list_modified', () => _.defer(() => {
+            resolve()
+          }))
+        })
 
         clock.tick(2)
+
+        return promise
+          .then(() => {
+            return new Promise((resolve) => {
+              _.defer(() => {
+                resolve()
+              })
+            })
+          })
+          .then(() => {
+            expect(preprocess).to.have.been.calledOnce
+          })
       })
     })
   })
diff --git a/test/unit/launcher.spec.js b/test/unit/launcher.spec.js
index 81e11031f..aa3662599 100644
--- a/test/unit/launcher.spec.js
+++ b/test/unit/launcher.spec.js
@@ -10,7 +10,7 @@ var stubPromise = (obj, method, stubAction) => {
     obj[method].resolve = resolve
   })
 
-  sinon.stub(obj, method, () => {
+  sinon.stub(obj, method).callsFake(() => {
     if (stubAction) stubAction()
 
     return promise
@@ -30,7 +30,7 @@ class FakeBrowser {
 
     baseBrowserDecorator(this)
     FakeBrowser._instances.push(this)
-    sinon.stub(this, 'start', () => {
+    sinon.stub(this, 'start').callsFake(() => {
       this.state = this.STATE_BEING_CAPTURED
       this._done()
     })
@@ -52,7 +52,7 @@ class ScriptBrowser {
 
     baseBrowserDecorator(this)
     ScriptBrowser._instances.push(this)
-    sinon.stub(this, 'start', () => {
+    sinon.stub(this, 'start').callsFake(() => {
       this.state = this.STATE_BEING_CAPTURED
       this._done()
     })
diff --git a/test/unit/logger.spec.js b/test/unit/logger.spec.js
index 873ba3c5a..b8b92f737 100644
--- a/test/unit/logger.spec.js
+++ b/test/unit/logger.spec.js
@@ -15,7 +15,7 @@ describe('logger', () => {
         filename: 'test/unit/test.log'
       }])
 
-      expect(m.log4js.appenders).to.have.keys(['console', 'file'])
+      expect(m.log4js.appenders).to.have.keys(['console', 'file', 'stdout'])
     })
   })
 })
diff --git a/test/unit/middleware/runner.spec.js b/test/unit/middleware/runner.spec.js
index 4961d2683..e773f1c26 100644
--- a/test/unit/middleware/runner.spec.js
+++ b/test/unit/middleware/runner.spec.js
@@ -70,7 +70,7 @@ describe('middleware.runner', () => {
 
   it('should trigger test run and stream the reporter', (done) => {
     capturedBrowsers.add(new Browser())
-    sinon.stub(capturedBrowsers, 'areAllReady', () => true)
+    sinon.stub(capturedBrowsers, 'areAllReady').callsFake(() => true)
 
     response.once('end', () => {
       expect(nextSpy).to.not.have.been.called
@@ -86,7 +86,7 @@ describe('middleware.runner', () => {
 
   it('should set the empty to 0 if empty results', (done) => {
     capturedBrowsers.add(new Browser())
-    sinon.stub(capturedBrowsers, 'areAllReady', () => true)
+    sinon.stub(capturedBrowsers, 'areAllReady').callsFake(() => true)
 
     response.once('end', () => {
       expect(nextSpy).to.not.have.been.called
@@ -102,7 +102,7 @@ describe('middleware.runner', () => {
 
   it('should set the empty to 1 if successful tests', (done) => {
     capturedBrowsers.add(new Browser())
-    sinon.stub(capturedBrowsers, 'areAllReady', () => true)
+    sinon.stub(capturedBrowsers, 'areAllReady').callsFake(() => true)
 
     response.once('end', () => {
       expect(nextSpy).to.not.have.been.called
@@ -118,7 +118,7 @@ describe('middleware.runner', () => {
 
   it('should set the empty to 1 if failed tests', (done) => {
     capturedBrowsers.add(new Browser())
-    sinon.stub(capturedBrowsers, 'areAllReady', () => true)
+    sinon.stub(capturedBrowsers, 'areAllReady').callsFake(() => true)
 
     response.once('end', () => {
       expect(nextSpy).to.not.have.been.called
@@ -215,7 +215,7 @@ describe('middleware.runner', () => {
     clientArgsRuns.forEach(function (run) {
       it(run.desc, (done) => {
         capturedBrowsers.add(new Browser())
-        sinon.stub(capturedBrowsers, 'areAllReady', () => true)
+        sinon.stub(capturedBrowsers, 'areAllReady').callsFake(() => true)
         if (run.existingConfig) {
           config = _.merge(config, {client: {args: run.existingConfig}})
         }
@@ -242,7 +242,7 @@ describe('middleware.runner', () => {
 
   it('should refresh explicit files if specified', (done) => {
     capturedBrowsers.add(new Browser())
-    sinon.stub(capturedBrowsers, 'areAllReady', () => true)
+    sinon.stub(capturedBrowsers, 'areAllReady').callsFake(() => true)
     sinon.stub(fileListMock, 'refresh')
     sinon.stub(fileListMock, 'addFile')
     sinon.stub(fileListMock, 'changeFile')
@@ -276,7 +276,7 @@ describe('middleware.runner', () => {
 
   it('should wait for refresh to finish if applicable before scheduling execution', (done) => {
     capturedBrowsers.add(new Browser())
-    sinon.stub(capturedBrowsers, 'areAllReady', () => true)
+    sinon.stub(capturedBrowsers, 'areAllReady').callsFake(() => true)
 
     var res = null
     var fileListPromise = new Promise((resolve, reject) => {
@@ -303,7 +303,7 @@ describe('middleware.runner', () => {
 
   it('should schedule execution if no refresh', (done) => {
     capturedBrowsers.add(new Browser())
-    sinon.stub(capturedBrowsers, 'areAllReady', () => true)
+    sinon.stub(capturedBrowsers, 'areAllReady').callsFake(() => true)
 
     sinon.spy(fileListMock, 'refresh')
     sinon.stub(executor, 'schedule')
@@ -331,7 +331,7 @@ describe('middleware.runner', () => {
     config.autoWatch = true
 
     capturedBrowsers.add(new Browser())
-    sinon.stub(capturedBrowsers, 'areAllReady', () => true)
+    sinon.stub(capturedBrowsers, 'areAllReady').callsFake(() => true)
 
     sinon.spy(fileListMock, 'refresh')
     sinon.stub(executor, 'schedule')
diff --git a/test/unit/preprocessor.spec.js b/test/unit/preprocessor.spec.js
index c0974e6a1..2de625023 100644
--- a/test/unit/preprocessor.spec.js
+++ b/test/unit/preprocessor.spec.js
@@ -9,7 +9,7 @@ describe('preprocessor', () => {
   var mockFs
   var emitterSetting
   // mimic first few bytes of a pdf file
-  var binarydata = new Buffer([0x25, 0x50, 0x44, 0x66, 0x46, 0x00])
+  var binarydata = new Buffer([0x25, 0x50, 0x44, 0x66, 0x46, 0x00]) // eslint-disable-line node/no-deprecated-api
 
   beforeEach(() => {
     mockFs = mocks.fs.create({
diff --git a/test/unit/runner.spec.js b/test/unit/runner.spec.js
index 68d45491e..98fcb2118 100644
--- a/test/unit/runner.spec.js
+++ b/test/unit/runner.spec.js
@@ -13,12 +13,12 @@ describe('runner', () => {
     var EXIT = constant.EXIT_CODE
 
     it('should return 0 exit code if present in the buffer', () => {
-      var result = m.parseExitCode(new Buffer(`something\nfake${EXIT}10`))
+      var result = m.parseExitCode(new Buffer(`something\nfake${EXIT}10`)) // eslint-disable-line node/no-deprecated-api
       expect(result.exitCode).to.equal(0)
     })
 
     it('should remove the exit code part of the returned buffer', () => {
-      var buffer = new Buffer(`some${EXIT}01`)
+      var buffer = new Buffer(`some${EXIT}01`) // eslint-disable-line node/no-deprecated-api
       var result = m.parseExitCode(buffer)
 
       expect(buffer.toString()).to.equal(`some${EXIT}01`)
@@ -27,7 +27,7 @@ describe('runner', () => {
 
     it('should not touch buffer without exit code and return default', () => {
       var msg = 'some nice \n messgae {}'
-      var buffer = new Buffer(msg)
+      var buffer = new Buffer(msg) // eslint-disable-line node/no-deprecated-api
       var result = m.parseExitCode(buffer, 10)
 
       expect(result.buffer.toString()).to.equal(msg)
@@ -52,21 +52,21 @@ describe('runner', () => {
     })
 
     it('should parse any single digit exit code', () => {
-      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}01`)).exitCode).to.equal(1)
-      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}17`)).exitCode).to.equal(7)
+      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}01`)).exitCode).to.equal(1) // eslint-disable-line node/no-deprecated-api
+      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}17`)).exitCode).to.equal(7) // eslint-disable-line node/no-deprecated-api
     })
 
     it('should return exit code 0 if failOnEmptyTestSuite is false and and non-empty int is 0', () => {
-      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}01`), undefined, false).exitCode).to.equal(0)
+      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}01`), undefined, false).exitCode).to.equal(0) // eslint-disable-line node/no-deprecated-api
     })
 
     it('should return exit code if failOnEmptyTestSuite is true', () => {
-      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}00`), undefined, true).exitCode).to.equal(0)
-      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}01`), undefined, true).exitCode).to.equal(1)
-      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}07`), undefined, true).exitCode).to.equal(7)
-      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}10`), undefined, true).exitCode).to.equal(0)
-      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}11`), undefined, true).exitCode).to.equal(1)
-      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}17`), undefined, true).exitCode).to.equal(7)
+      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}00`), undefined, true).exitCode).to.equal(0) // eslint-disable-line node/no-deprecated-api
+      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}01`), undefined, true).exitCode).to.equal(1) // eslint-disable-line node/no-deprecated-api
+      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}07`), undefined, true).exitCode).to.equal(7) // eslint-disable-line node/no-deprecated-api
+      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}10`), undefined, true).exitCode).to.equal(0) // eslint-disable-line node/no-deprecated-api
+      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}11`), undefined, true).exitCode).to.equal(1) // eslint-disable-line node/no-deprecated-api
+      expect(m.parseExitCode(new Buffer(`something\nfake${EXIT}17`), undefined, true).exitCode).to.equal(7) // eslint-disable-line node/no-deprecated-api
     })
   })
 })
diff --git a/test/unit/server.spec.js b/test/unit/server.spec.js
index ec8edef8c..248ad1f4b 100644
--- a/test/unit/server.spec.js
+++ b/test/unit/server.spec.js
@@ -230,7 +230,7 @@ describe('server', () => {
       fileListOnResolve()
 
       function mockProcess (process) {
-        sinon.stub(process, 'kill', (pid, ev) => process.emit(ev))
+        sinon.stub(process, 'kill').callsFake((pid, ev) => process.emit(ev))
       }
     })
   })
diff --git a/test/unit/web-server.spec.js b/test/unit/web-server.spec.js
index 51ee479da..651eb470e 100644
--- a/test/unit/web-server.spec.js
+++ b/test/unit/web-server.spec.js
@@ -1,4 +1,4 @@
-require('core-js')
+import 'core-js'
 import {EventEmitter} from 'events'
 import request from 'supertest'
 import di from 'di'