diff --git a/package.json b/package.json
index 40dd7c12..d4b46031 100644
--- a/package.json
+++ b/package.json
@@ -87,7 +87,7 @@
     "eslint-plugin-import": "^2.18.2",
     "eslint-plugin-jsx-a11y": "^6.2.3",
     "eslint-plugin-react": "^7.16.0",
-    "extract-text-webpack-plugin": "3.0.2",
+    "mini-css-extract-plugin": "0.9.0",
     "node-sass": "^4.13.0",
     "prettier": "^1.13.5",
     "redux-logger": "^3.0.6",
diff --git a/webpack/site.js b/webpack/site.js
index c5cd1971..baf7c905 100644
--- a/webpack/site.js
+++ b/webpack/site.js
@@ -1,4 +1,4 @@
-const ExtractTextPlugin = require('extract-text-webpack-plugin')
+const MiniCssExtractPlugin = require('mini-css-extract-plugin')
 const HtmlWebpackPlugin = require('html-webpack-plugin')
 const path = require('path')
 
@@ -25,12 +25,11 @@ module.exports = {
       isProd
         ? {
             test: /\.scss$/,
-            use: {
-              loader: ExtractTextPlugin.extract({
-                fallback: 'style-loader',
-                use: 'css-loader!sass-loader',
-              }),
-            },
+            use: [
+              MiniCssExtractPlugin.loader,
+              { loader: 'css-loader', options: { sourceMap: true, importLoaders: 1 } },
+              { loader: 'sass-loader', options: { sourceMap: true } },
+            ],
           }
         : {
             test: /\.scss$/,
@@ -43,7 +42,7 @@ module.exports = {
     ],
   },
   plugins: [
-    ...(isProd ? [new ExtractTextPlugin('styles-[hash].css')] : []),
+    ...(isProd ? [new MiniCssExtractPlugin({ filename: 'styles-[hash].css' })] : []),
     new HtmlWebpackPlugin({
       template: './site/template.html',
     }),
diff --git a/yarn.lock b/yarn.lock
index 2d4fd52e..c367f9e9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1112,7 +1112,7 @@ ajv-keywords@^3.1.0, ajv-keywords@^3.4.1:
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.4.1.tgz#ef916e271c64ac12171fd8384eaae6b2345854da"
   integrity sha512-RO1ibKvd27e6FEShVFfPALuHI3WjSVNeK5FIsmme/LYRNxjKuNj+Dt7bucLa6NdSv3JcVTyMlm9kGR84z1XpaQ==
 
-ajv@^5.0.0, ajv@^5.1.0:
+ajv@^5.1.0:
   version "5.5.2"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.5.2.tgz#73b5eeca3fab653e3d3f9422b341ad42205dc965"
   dependencies:
@@ -1427,7 +1427,7 @@ async@^2.0.0:
   dependencies:
     lodash "^4.14.0"
 
-async@^2.4.1, async@^2.6.2:
+async@^2.6.2:
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/async/-/async-2.6.3.tgz#d72625e2344a3656e3a3ad4fa749fa83299d82ff"
   integrity sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==
@@ -3904,16 +3904,6 @@ extglob@^2.0.4:
     snapdragon "^0.8.1"
     to-regex "^3.0.1"
 
-extract-text-webpack-plugin@3.0.2:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/extract-text-webpack-plugin/-/extract-text-webpack-plugin-3.0.2.tgz#5f043eaa02f9750a9258b78c0a6e0dc1408fb2f7"
-  integrity sha512-bt/LZ4m5Rqt/Crl2HiKuAl/oqg0psx1tsTLkvWbJen1CtD+fftkZhMaQ9HOtY2gWsl2Wq+sABmMVi9z3DhKWQQ==
-  dependencies:
-    async "^2.4.1"
-    loader-utils "^1.1.0"
-    schema-utils "^0.3.0"
-    webpack-sources "^1.0.1"
-
 extract-zip@^1.0.3:
   version "1.6.6"
   resolved "https://registry.yarnpkg.com/extract-zip/-/extract-zip-1.6.6.tgz#1290ede8d20d0872b429fd3f351ca128ec5ef85c"
@@ -6117,6 +6107,16 @@ min-document@^2.19.0:
   dependencies:
     dom-walk "^0.1.0"
 
+mini-css-extract-plugin@0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.9.0.tgz#47f2cf07aa165ab35733b1fc97d4c46c0564339e"
+  integrity sha512-lp3GeY7ygcgAmVIcRPBVhIkf8Us7FZjA+ILpal44qLdSu11wmjKQ3d9k15lfD7pO4esu9eUIAW7qiYIBppv40A==
+  dependencies:
+    loader-utils "^1.1.0"
+    normalize-url "1.9.1"
+    schema-utils "^1.0.0"
+    webpack-sources "^1.1.0"
+
 mini-css-extract-plugin@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.7.0.tgz#5ba8290fbb4179a43dd27cca444ba150bee743a0"
@@ -8722,13 +8722,6 @@ scheduler@^0.17.0:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
 
-schema-utils@^0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-0.3.0.tgz#f5877222ce3e931edae039f17eb3716e7137f8cf"
-  integrity sha1-9YdyIs4+kx7a4DnxfrNxbnE3+M8=
-  dependencies:
-    ajv "^5.0.0"
-
 schema-utils@^0.4.3:
   version "0.4.5"
   resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-0.4.5.tgz#21836f0608aac17b78f9e3e24daff14a5ca13a3e"
@@ -10181,7 +10174,7 @@ webpack-merge@^4.2.1:
   dependencies:
     lodash "^4.17.15"
 
-webpack-sources@1.0.1, webpack-sources@^1.0.1, webpack-sources@^1.1.0, webpack-sources@^1.4.0, webpack-sources@^1.4.1:
+webpack-sources@1.0.1, webpack-sources@^1.1.0, webpack-sources@^1.4.0, webpack-sources@^1.4.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-1.0.1.tgz#c7356436a4d13123be2e2426a05d1dad9cbe65cf"
   dependencies: