diff --git a/package.json b/package.json
index 7d19bf21..068baf5d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "angularjs-gulp-browserify-boilerplate",
-  "version": "1.5.1",
+  "version": "1.5.2",
   "author": "Jake Marsh <jakemmarsh@gmail.com>",
   "description": "Boilerplate using AngularJS, SASS, Gulp, and Browserify while also utilizing best practices.",
   "repository": {
diff --git a/test/karma.conf.js b/test/karma.conf.js
index 29689e3d..c662ea36 100644
--- a/test/karma.conf.js
+++ b/test/karma.conf.js
@@ -12,7 +12,8 @@ const karmaBaseConfig = {
   frameworks: ['jasmine', 'browserify'],
 
   preprocessors: {
-    'app/js/**/*.js': ['browserify', 'coverage']
+    'app/js/**/*.js': ['browserify', 'coverage'],
+    'test/**/*.js': ['browserify']
   },
 
   browsers: ['Chrome'],
diff --git a/test/unit/constants_spec.js b/test/unit/constants_spec.js
index 8fb2a5b6..81cdc7a7 100644
--- a/test/unit/constants_spec.js
+++ b/test/unit/constants_spec.js
@@ -4,14 +4,14 @@
 
 describe('Unit: Constants', function() {
 
-  var constants;
+  let constants;
 
   beforeEach(function() {
     // instantiate the app module
     angular.mock.module('app');
 
     // mock the directive
-    angular.mock.inject(function(AppSettings) {
+    angular.mock.inject((AppSettings) => {
       constants = AppSettings;
     });
   });
diff --git a/test/unit/controllers/example_spec.js b/test/unit/controllers/example_spec.js
index bfbfa546..4f71c4f5 100644
--- a/test/unit/controllers/example_spec.js
+++ b/test/unit/controllers/example_spec.js
@@ -4,13 +4,13 @@
 
 describe('Unit: ExampleCtrl', function() {
 
-  var ctrl;
+  let ctrl;
 
   beforeEach(function() {
     // instantiate the app module
     angular.mock.module('app');
 
-    angular.mock.inject(function($controller) {
+    angular.mock.inject(($controller) => {
       ctrl = $controller('ExampleCtrl');
     });
   });
diff --git a/test/unit/directives/example_spec.js b/test/unit/directives/example_spec.js
index 42a5d011..77cac062 100644
--- a/test/unit/directives/example_spec.js
+++ b/test/unit/directives/example_spec.js
@@ -11,7 +11,7 @@ describe('Unit: ExampleDirective', function() {
     spyOn(window, 'alert');
     angular.mock.module('app');
 
-    angular.mock.inject(function($compile, $rootScope) {
+    angular.mock.inject(($compile, $rootScope) => {
       scope = $rootScope;
       scope.title = 'A sample title';
       scope.message = 'A sample message';
diff --git a/test/unit/filters/example_spec.js b/test/unit/filters/example_spec.js
index d339a0c4..fe7f833b 100644
--- a/test/unit/filters/example_spec.js
+++ b/test/unit/filters/example_spec.js
@@ -4,21 +4,21 @@
 
 describe('Unit: ExampleFilter', function() {
 
-  var $filter;
+  let $filter;
 
   beforeEach(function() {
     // instantiate the app module
     angular.mock.module('app');
 
     // mock the filter
-    angular.mock.inject(function(_$filter_) {
+    angular.mock.inject((_$filter_) => {
       $filter = _$filter_;
     });
   });
 
   it('should replace the word "keyboard" with "leopard"', function() {
-    var testString = 'computers are operated by keyboards';
-    var resultString = $filter('ExampleFilter')(testString);
+    const testString = 'computers are operated by keyboards';
+    const resultString = $filter('ExampleFilter')(testString);
 
     expect(resultString).toEqual('computers are operated by leopards');
   });
diff --git a/test/unit/services/example_spec.js b/test/unit/services/example_spec.js
index fadce16f..77aba4d6 100644
--- a/test/unit/services/example_spec.js
+++ b/test/unit/services/example_spec.js
@@ -4,14 +4,14 @@
 
 describe('Unit: ExampleService', function() {
 
-  var http, service;
+  let http, service;
 
   beforeEach(function() {
     // instantiate the app module
     angular.mock.module('app');
 
     // mock the service
-    angular.mock.inject(function($httpBackend, ExampleService) {
+    angular.mock.inject(($httpBackend, ExampleService) => {
       http = $httpBackend;
       service = ExampleService;
     });
@@ -24,9 +24,9 @@ describe('Unit: ExampleService', function() {
   it('should retrieve data', function(done) {
     http.expect('GET', 'apiPath').respond(201, {data: 1234});
 
-    service.get().then(function(result) {
+    service.get().then((result) => {
       expect(result).toEqual({data: 1234});
-    }, function(error) {
+    }).catch((error) => {
       expect(error).toBeUndefined();
     }).then(done);