diff --git a/zeppelin-web/karma.conf.js b/zeppelin-web/karma.conf.js
index e12264815fc..018ccb5b111 100644
--- a/zeppelin-web/karma.conf.js
+++ b/zeppelin-web/karma.conf.js
@@ -115,7 +115,16 @@ module.exports = function(config) {
     // - Safari (only Mac)
     // - PhantomJS
     // - IE (only Windows)
-    browsers: [ 'PhantomJS' ],
+    browsers: [ 'FirefoxHeadless' ],
+
+    plugins: [
+      'karma-coverage',
+      'karma-jasmine',
+      'karma-sourcemap-loader',
+      'karma-webpack',
+      'karma-spec-reporter',
+      'karma-firefox-launcher',
+    ],
 
     reporters: ['spec', 'coverage'],
 
diff --git a/zeppelin-web/package.json b/zeppelin-web/package.json
index de83a629d0b..386bd9d1129 100644
--- a/zeppelin-web/package.json
+++ b/zeppelin-web/package.json
@@ -21,7 +21,6 @@
     "test:watch": "karma start karma.conf.js --single-run=false",
     "pree2e": "webdriver-manager update --gecko false --versions.chrome=2.35",
     "e2e": "protractor protractor.conf.js",
-    "pretest": "npm rebuild phantomjs-prebuilt",
     "karma-test": "karma start karma.conf.js"
   },
   "dependencies": {
@@ -83,9 +82,9 @@
     "karma": "~3.1.3",
     "karma-coverage": "^1.1.2",
     "karma-jasmine": "~2.0.1",
-    "karma-phantomjs-launcher": "^1.0.4",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-spec-reporter": "0.0.31",
+    "karma-firefox-launcher": "2.1.1",
     "karma-webpack": "^3.0.5",
     "load-grunt-tasks": "^0.4.0",
     "mini-css-extract-plugin": "^0.4.4",