diff --git a/background/index.js b/background/index.js
index 87ff2b4..a54bdb5 100644
--- a/background/index.js
+++ b/background/index.js
@@ -35,6 +35,15 @@ const updateBadge = (open) => {
   });
 };
 
+const sendNotification = (open) => {
+  browser.notifications.create('notification-id', {
+    type: 'basic',
+    iconUrl: browser.runtime.getURL('icons/logo.svg'),
+    title: 'Space Status',
+    message: 'Space ist jetzt ' + (open ? 'offen' : 'geschlossen') + '.'
+  });
+};
+
 const fetchNewData = () => {
   fetchCalendar().then((json) => {
     window.calendar = json;
@@ -43,6 +52,9 @@ const fetchNewData = () => {
   });
 
   fetchSpaceApi().then((json) => {
+    if (window.spaceApi.state.open !== json.state.open) {
+      sendNotification(json.state.open)
+    }
     window.spaceApi = json;
     updateBadge(window.spaceApi.state.open);
   }).catch((error) => {
diff --git a/manifest.json b/manifest.json
index c344066..fc64f40 100644
--- a/manifest.json
+++ b/manifest.json
@@ -24,7 +24,8 @@
   },
   "permissions": [
     "https://usrspace.at/*",
-    "webRequest"
+    "webRequest",
+    "notifications"
   ],
   "author": "Thomas Rupprecht"
   //"developer": {