diff --git a/manifest.json b/manifest.json
index 637e534..357d00d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,8 +1,8 @@
 {
-  "manifest_version": 2,
+  "manifest_version": 3,
 
   "name": "IS24 Price Per Area",
-  "version": "2.0",
+  "version": "3.0",
   "description": "Show price per m² on the search result pages, the shortlist page, and the expose pages of ImmobilienScout24. Not affiliated with ImmobilienScout24.",
   "author": "Sebastian Schreck",
   "homepage_url": "https://github.com/StegSchreck/is24-price-per-area",
@@ -18,11 +18,10 @@
   ],
 
   "background": {
-    "scripts": ["background.js"],
-    "persistent": false
+    "service_worker": "background.js"
   },
 
-  "page_action": {
+  "action": {
     "default_icon": {
       "16": "images/icon_16.png",
       "32": "images/icon_32.png",