diff --git a/.gitignore b/.gitignore
index da23d0d..44e4d24 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,5 @@ build/Release
 # Deployed apps should consider commenting this line out:
 # see https://npmjs.org/doc/faq.html#Should-I-check-my-node_modules-folder-into-git
 node_modules
+
+package-lock.json
\ No newline at end of file
diff --git a/package.json b/package.json
index 7d46b91..225d262 100644
--- a/package.json
+++ b/package.json
@@ -26,12 +26,12 @@
   },
   "homepage": "https://github.com/ahmednuaman/javascript-tests",
   "dependencies": {
-    "karma": "^0.12.32",
-    "karma-jasmine": "^0.3.5",
-    "karma-phantomjs-launcher": "^0.1.4"
+    "karma": "^5.1.0",
+    "karma-jasmine": "^3.3.1",
+    "karma-phantomjs-launcher": "^1.0.4"
   },
   "devDependencies": {
-    "karma-chrome-launcher": "^0.1.12",
-    "karma-firefox-launcher": "^0.1.6"
+    "karma-chrome-launcher": "^3.1.0",
+    "karma-firefox-launcher": "^1.3.0"
   }
 }
diff --git a/test/clone-object.js b/test/clone-object.js
index 86ec647..e62b7f6 100644
--- a/test/clone-object.js
+++ b/test/clone-object.js
@@ -3,6 +3,12 @@ describe('clone object', function () {
     var expected = {name: 'Ahmed', age: 27, skills: ['cycling', 'walking', 'eating']},
         obj = {};
 
+    var clone = function(o) {
+      return JSON.parse(JSON.stringify(o))
+    };
+
+    obj = clone(expected);
+
     expect(obj).toEqual(expected);
     expect(obj).not.toBe(expected);
   });
diff --git a/test/flatten-array.js b/test/flatten-array.js
index c7f0632..ac4fe58 100644
--- a/test/flatten-array.js
+++ b/test/flatten-array.js
@@ -3,6 +3,21 @@ describe('flatten array', function () {
     var arr = [1, 2, [1, 2, [3, 4, 5, [1]]], 2, [2]],
         expected = [1, 1, 1, 2, 2, 2, 2, 3, 4, 5];
 
+    var flatten = function(a) {
+      var res = [];
+
+      for(var i = 0; i < a.length; i++) {
+        if(Array.isArray(a[i])) {
+          res = res.concat(flatten(a[i]))
+        } else {
+          res.push(a[i]);
+        }
+      }
+      return res.sort();
+    };
+
+    arr = flatten(arr);
+
     expect(arr).toEqual(expected);
   });
 });
\ No newline at end of file
diff --git a/test/scoping.js b/test/scoping.js
index 557c54a..1403401 100644
--- a/test/scoping.js
+++ b/test/scoping.js
@@ -4,7 +4,7 @@ describe('scoping', function () {
         request;
 
     request = function (callback) {
-      return callback();
+      return callback.bind(this)();
     };
 
     function Module () {
@@ -16,7 +16,7 @@ describe('scoping', function () {
     };
 
     Module.prototype.req = function() {
-      return request(this.method);
+      return request.bind(this)(this.method);
     };
 
     expect(mod.req()).toBe('bar');