diff --git a/package.json b/package.json
index 877e24eaf..5cdb5d38c 100644
--- a/package.json
+++ b/package.json
@@ -20,8 +20,12 @@
     "unit-test": "cross-env NODE_PATH=src NODE_ENV=test mocha src/**/test/*.js -r mocha.config.js -r babel-register",
     "test": "npm run unit-test && npm run lint"
   },
+  "browserslist": [
+    "last 2 versions",
+    "ie 11"
+  ],
   "devDependencies": {
-    "autoprefixer": "^6.7.7",
+    "autoprefixer": "^7.1.1",
     "babel-core": "^6.24.1",
     "babel-eslint": "^7.2.3",
     "babel-loader": "^7.0.0",
@@ -44,12 +48,11 @@
     "eslint-plugin-wpcalypso": "^3.2.0",
     "extract-text-webpack-plugin": "^2.1.0",
     "mocha": "^3.3.0",
-    "node-sass": "^4.5.2",
-    "postcss-loader": "^1.3.3",
-    "raw-loader": "^0.5.1",
+    "node-sass": "^4.5.3",
+    "postcss-loader": "^2.0.5",
     "rimraf": "^2.6.1",
-    "sass-loader": "^6.0.3",
-    "style-loader": "^0.16.1",
+    "sass-loader": "^6.0.5",
+    "style-loader": "^0.17.0",
     "webpack": "^2.4.1"
   },
   "dependencies": {
diff --git a/webpack.config.js b/webpack.config.js
index f2340ef4a..3f2abe251 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -48,12 +48,7 @@ const config = module.exports = {
 		} ),
 		new webpack.LoaderOptionsPlugin( {
 			minimize: process.env.NODE_ENV === 'production',
-			debug: process.env.NODE_ENV !== 'production',
-			options: {
-				postcss: [
-					require( 'autoprefixer' )
-				]
-			}
+			debug: process.env.NODE_ENV !== 'production'
 		} )
 	]
 };
@@ -63,8 +58,14 @@ if ( 'production' === process.env.NODE_ENV ) {
 		test: /\.s?css$/,
 		loader: ExtractTextPlugin.extract( {
 			use: [
-				{ loader: 'raw-loader' },
-				{ loader: 'postcss-loader' },
+				{
+					loader: 'postcss-loader',
+					options: {
+						plugins: [
+							require( 'autoprefixer' )
+						]
+					}
+				},
 				{
 					loader: 'sass-loader',
 					query: {
@@ -93,7 +94,6 @@ if ( 'production' === process.env.NODE_ENV ) {
 		use: [
 			{ loader: 'style-loader' },
 			{ loader: 'css-loader' },
-			{ loader: 'postcss-loader' },
 			{ loader: 'sass-loader' }
 		]
 	} );