diff --git a/gulpfile.js b/gulpfile.js
index 53191d2f5..a22eb1cb8 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -1,5 +1,5 @@
 
 
-var gulp_bitcore = require('gulp-bitcore');
+var bitcoreTasks = require('bitcore-build');
 
-gulp_bitcore();
+bitcoreTasks();
diff --git a/package.json b/package.json
index 09e781887..42c4997ac 100644
--- a/package.json
+++ b/package.json
@@ -86,15 +86,10 @@
     "chai": "~1.10.0",
     "closure-compiler-jar": "git://github.com/eordano/closure-compiler-jar.git",
     "gulp": "^3.8.10",
-    "gulp-bitcore": "^0.3.0",
+    "bitcore-build": "^0.4.1",
     "istanbul": "^0.3.5",
     "jsdoc": "^3.3.0-alpha11",
     "jsdoc-to-markdown": "=0.5.9",
-    "karma": "^0.12.28",
-    "karma-chrome-launcher": "^0.1.7",
-    "karma-detect-browsers": "^0.1.3",
-    "karma-firefox-launcher": "^0.1.3",
-    "karma-mocha": "^0.1.9",
     "mocha": "~2.0.1",
     "more-fs": "=0.5.0",
     "plato": "^1.3.0",