diff --git a/config/webpack.tests.js b/config/webpack.tests.js
index 4f527efb..f74993e8 100644
--- a/config/webpack.tests.js
+++ b/config/webpack.tests.js
@@ -35,6 +35,10 @@ module.exports = merge(common, {
           presets: ['es2015', 'node6', 'react', 'stage-2'],
         },
       },
+      {
+        test: /\.css$/,
+        loader: 'style-loader!css-loader',
+      },
     ],
   },
   plugins: [
diff --git a/package.json b/package.json
index d92a8642..4b965947 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "moment-range": "2.2.0",
     "moment-timezone": "0.5.13",
     "morgan": "1.9.0",
-    "node-sass": "4.5.2",
+    "node-sass": "4.14.1",
     "normalizr": "2.2.1",
     "passport": "0.3.2",
     "passport-helsinki": "git://github.com/City-of-Helsinki/passport-helsinki.git",