diff --git a/.gitignore b/.gitignore
index 952cef2..cb63a3c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 .DS_Store
 
 public/index.html
+public/sw/
 
 # Logs
 logs
diff --git a/config/service-worker.config.js b/config/service-worker.config.js
new file mode 100644
index 0000000..0bd635b
--- /dev/null
+++ b/config/service-worker.config.js
@@ -0,0 +1,49 @@
+"use strict";
+
+const webpack = require("webpack");
+const helpers = require("./helpers");
+const UglifyJSPlugin = require("uglifyjs-webpack-plugin");
+
+const ServiceWorkerConfig = {
+  resolve: {
+    extensions: [".js", ".vue"]
+  },
+  entry: {
+    serviceWorker: [helpers.root("public", "service-worker")]
+  },
+  optimization: {
+    minimizer: []
+  },
+  module: {
+    rules: [
+      {
+        test: /\.js$/,
+        loader: "babel-loader",
+        include: [helpers.root("public", "service-worker")]
+      }
+    ]
+  },
+  mode: "production",
+  output: {
+    path: helpers.root("public/sw"),
+    publicPath: "/",
+    filename: "[name].js"
+    //filename: "js/[name].bundle.js"
+  },
+  optimization: {
+    minimizer: [
+      new UglifyJSPlugin({
+        cache: true,
+        parallel: false,
+        sourceMap: false
+      })
+    ]
+  },
+  plugins: [
+    new webpack.DefinePlugin({
+      __DATE__: new Date().getTime()
+    })
+  ]
+};
+
+module.exports = ServiceWorkerConfig;
diff --git a/config/webpack.config.prod.js b/config/webpack.config.prod.js
index d7fccf3..a38b84c 100644
--- a/config/webpack.config.prod.js
+++ b/config/webpack.config.prod.js
@@ -1,6 +1,7 @@
 "use strict";
 
 const { CleanWebpackPlugin } = require("clean-webpack-plugin");
+const path = require("path");
 const webpack = require("webpack");
 const merge = require("webpack-merge");
 const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");
@@ -19,7 +20,7 @@ const webpackConfig = merge(commonConfig(false), {
     path: helpers.root("public/dist"),
     publicPath: "/dist/",
     filename: "js/[name].bundle.[hash:7].js"
-    //filename: 'js/[name].bundle.js'
+    //filename: "js/[name].bundle.js"
   },
   optimization: {
     splitChunks: {
@@ -50,6 +51,7 @@ const webpackConfig = merge(commonConfig(false), {
     new webpack.EnvironmentPlugin(environment),
     new MiniCSSExtractPlugin({
       filename: "css/[name].[hash:7].css"
+      //filename: "css/[name].css"
     })
   ]
 });
diff --git a/public/service-worker.js b/public/service-worker.js
index 8937acc..dc3e9ed 100644
--- a/public/service-worker.js
+++ b/public/service-worker.js
@@ -1,9 +1,10 @@
-var version = "v1.0";
-var cacheName = "::vinlottis";
-var CACHE_NAME = version + cacheName;
-var CACHE_NAME_API = version + cacheName + "::api";
+var version = "v1.0" + __DATE__;
+var cacheName = "vinlottis";
+var CACHE_NAME = cacheName;
+var CACHE_NAME_API = cacheName + "::api";
 var STATIC_CACHE_URLS = ["/"];
 
+console.log("Nåværende versjon:", version);
 self.addEventListener("activate", event => {
   event.waitUntil(
     caches
@@ -12,7 +13,7 @@ self.addEventListener("activate", event => {
       .then(keys =>
         Promise.all(
           keys.map(key => {
-            console.log(`Deleting cache ${key}`);
+            console.log(`Sletter mellom-lager på nøkkel ${key}`);
             return caches.delete(key);
           })
         )
@@ -25,18 +26,29 @@ self.addEventListener("activate", event => {
       .then(keys =>
         Promise.all(
           keys.map(key => {
-            console.log(`Deleting cache ${key}`);
+            console.log(`Sletter mellom-lager på nøkkel ${key}`);
             return caches.delete(key);
           })
         )
       )
   );
+
+  event.waitUntil(
+    caches.open(CACHE_NAME).then(cache => {
+      console.log("Legger til cache", cache);
+      return cache.addAll(STATIC_CACHE_URLS);
+    })
+  );
 });
 
 self.addEventListener("install", event => {
   console.log("Arbeids arbeideren installerer seg.");
+  self.skipWaiting();
   event.waitUntil(
-    caches.open(CACHE_NAME).then(cache => cache.addAll(STATIC_CACHE_URLS))
+    caches.open(CACHE_NAME).then(cache => {
+      console.log("Legger til cache", cache);
+      return cache.addAll(STATIC_CACHE_URLS);
+    })
   );
 });
 
diff --git a/server.js b/server.js
index f100bf1..66450d4 100644
--- a/server.js
+++ b/server.js
@@ -81,7 +81,7 @@ app.use("/api/", updateApi);
 app.use("/api/", retrieveApi);
 
 app.use("/service-worker.js", function(req, res) {
-  res.sendFile(path.join(__dirname, "public/service-worker.js"));
+  res.sendFile(path.join(__dirname, "public/sw/serviceWorker.js"));
 });
 
 app.listen(30030);
diff --git a/webpack.config.js b/webpack.config.js
index 097e6a7..7753198 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -9,6 +9,7 @@ if (environment === "development") {
   let prodConfig = require("./config/webpack.config.prod");
 
   prodConfig = merge(prodConfig, require("./config/vinlottis.config.js"));
+  let serviceWorkerConfig = require("./config/service-worker.config.js");
 
-  module.exports = prodConfig;
+  module.exports = [prodConfig, serviceWorkerConfig];
 }