diff --git a/package.json b/package.json
index 6994daf..927f2c1 100644
--- a/package.json
+++ b/package.json
@@ -31,22 +31,22 @@
     "browserify": "^13.0.0",
     "browserify-istanbul": "^0.2.1",
     "chai": "^3.0.0",
-    "gulp": "^3.9.0",
+    "gulp": "^4.0.0",
     "gulp-gh-pages": "^0.5.2",
     "gulp-sourcemaps": "^1.5.2",
     "gulp-util": "^3.0.5",
-    "karma": "^0.13.19",
+    "karma": "^3.0.0",
     "karma-browserify": "^5.0.1",
     "karma-chai-sinon": "^0.1.5",
     "karma-chrome-launcher": "^0.2.2",
-    "karma-coverage": "^0.5.3",
+    "karma-coverage": "^2.0.2",
     "karma-firefox-launcher": "^0.1.6",
     "karma-mocha": "^0.2.1",
     "karma-source-map-support": "^1.0.0",
     "karma-spec-reporter": "^0.0.23",
     "lodash": "^4.0.1",
     "mocha": "^2.2.5",
-    "mversion": "^1.10.1",
+    "mversion": "^2.0.0",
     "sinon": "^1.14.1",
     "sinon-chai": "^2.8.0",
     "vinyl-buffer": "^1.0.0",