diff --git a/package.json b/package.json
index ff99b43..287cd3f 100644
--- a/package.json
+++ b/package.json
@@ -41,31 +41,31 @@
     "resource-loader": "^1.6.4"
   },
   "devDependencies": {
-    "browserify": "^11.1.0",
+    "browserify": "^13.0.1",
     "browserify-versionify": "^1.0.6",
-    "chai": "^3.2.0",
-    "del": "^2.0.2",
-    "gulp": "^3.9.0",
+    "chai": "^3.5.0",
+    "del": "^2.2.0",
+    "gulp": "^3.9.1",
     "gulp-cached": "^1.1.0",
     "gulp-concat": "^2.6.0",
-    "gulp-debug": "^2.1.0",
-    "gulp-header": "^1.7.1",
-    "gulp-jshint": "^2.0.0",
+    "gulp-debug": "^2.1.2",
+    "gulp-header": "^1.8.2",
+    "gulp-jshint": "^2.0.1",
     "gulp-mirror": "^1.0.0",
-    "gulp-plumber": "^1.0.1",
+    "gulp-plumber": "^1.1.0",
     "gulp-rename": "^1.2.2",
-    "gulp-sourcemaps": "^1.5.2",
-    "gulp-uglify": "^1.5.1",
-    "gulp-util": "^3.0.6",
+    "gulp-sourcemaps": "^1.6.0",
+    "gulp-uglify": "^1.5.3",
+    "gulp-util": "^3.0.7",
     "jaguarjs-jsdoc": "^1.0.0",
     "jsdoc": "^3.4.0",
-    "jshint": "^2.9.1",
+    "jshint": "^2.9.2",
     "jshint-summary": "^0.4.0",
     "minimist": "^1.2.0",
-    "mocha": "^2.4.5",
+    "mocha": "^2.5.3",
     "require-dir": "^0.3.0",
-    "run-sequence": "^1.1.2",
-    "testem": "^0.9.4",
+    "run-sequence": "^1.2.1",
+    "testem": "^1.8.1",
     "vinyl-buffer": "^1.0.0",
     "vinyl-source-stream": "^1.1.0",
     "watchify": "^3.7.0"

diff --git a/package.json b/package.json
index ff99b43..287cd3f 100644
--- a/package.json
+++ b/package.json
@@ -41,31 +41,31 @@
     "resource-loader": "^1.6.4"
   },
   "devDependencies": {
-    "browserify": "^11.1.0",
+    "browserify": "^13.0.1",
     "browserify-versionify": "^1.0.6",
-    "chai": "^3.2.0",
-    "del": "^2.0.2",
-    "gulp": "^3.9.0",
+    "chai": "^3.5.0",
+    "del": "^2.2.0",
+    "gulp": "^3.9.1",
     "gulp-cached": "^1.1.0",
     "gulp-concat": "^2.6.0",
-    "gulp-debug": "^2.1.0",
-    "gulp-header": "^1.7.1",
-    "gulp-jshint": "^2.0.0",
+    "gulp-debug": "^2.1.2",
+    "gulp-header": "^1.8.2",
+    "gulp-jshint": "^2.0.1",
     "gulp-mirror": "^1.0.0",
-    "gulp-plumber": "^1.0.1",
+    "gulp-plumber": "^1.1.0",
     "gulp-rename": "^1.2.2",
-    "gulp-sourcemaps": "^1.5.2",
-    "gulp-uglify": "^1.5.1",
-    "gulp-util": "^3.0.6",
+    "gulp-sourcemaps": "^1.6.0",
+    "gulp-uglify": "^1.5.3",
+    "gulp-util": "^3.0.7",
     "jaguarjs-jsdoc": "^1.0.0",
     "jsdoc": "^3.4.0",
-    "jshint": "^2.9.1",
+    "jshint": "^2.9.2",
     "jshint-summary": "^0.4.0",
     "minimist": "^1.2.0",
-    "mocha": "^2.4.5",
+    "mocha": "^2.5.3",
     "require-dir": "^0.3.0",
-    "run-sequence": "^1.1.2",
-    "testem": "^0.9.4",
+    "run-sequence": "^1.2.1",
+    "testem": "^1.8.1",
     "vinyl-buffer": "^1.0.0",
     "vinyl-source-stream": "^1.1.0",
     "watchify": "^3.7.0"
diff --git a/test/unit/core/display/Container.test.js b/test/unit/core/display/Container.test.js
index 3534c05..026848e 100644
--- a/test/unit/core/display/Container.test.js
+++ b/test/unit/core/display/Container.test.js
@@ -26,16 +26,16 @@
             child.on('removed', function(from) {
                 triggeredRemoved = true;
                 expect(container.children.length).to.be.equals(0);
-                expect(child.parent).to.be.null();
+                expect(child.parent).to.be.null;
                 expect(container).to.be.equals(from);
             });
 
             container.addChild(child);
-            expect(triggeredAdded).to.be.true();
-            expect(triggeredRemoved).to.be.false();
+            expect(triggeredAdded).to.be.true;
+            expect(triggeredRemoved).to.be.false;
 
             container.removeChild(child);
-            expect(triggeredRemoved).to.be.true();
+            expect(triggeredRemoved).to.be.true;
         });
 
     });