diff --git a/.travis.yml b/.travis.yml
index c920c654e..bac821b73 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,11 @@ language: node_js
 node_js:
 - 6
 - "node"
+env:
+  - NODE_ENV=production
+install:
+- npm --production=false install
+- npm --production=false update
 sudo: false
 cache:
   directories:
diff --git a/webpack.config.js b/webpack.config.js
index 9db7ea88e..677caf46a 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -27,13 +27,12 @@ const base = {
             }
         ]
     },
-    plugins: [
+    plugins: process.env.NODE_ENV === 'production' ? [
         new webpack.optimize.UglifyJsPlugin({
             include: /\.min\.js$/,
-            minimize: true,
-            sourceMap: true
+            minimize: true
         })
-    ]
+    ] : []
 };
 
 module.exports = [