diff --git a/chrome/manifest.json b/chrome/manifest.json
index 2d6f321..080517a 100644
--- a/chrome/manifest.json
+++ b/chrome/manifest.json
@@ -1,12 +1,10 @@
 {
-  "manifest_version": 2,
+  "manifest_version": 3,
   "name": "postMessage-tracker",
   "description": "Monitors and indicates postMessage-listeners in the current window.",
   "version": "1.0.0",
   "background": {
-    "scripts": [
-      "background.js"
-    ]
+    "scripts": "service_worker": "background.js"
   },
   "content_scripts": [
     {
@@ -24,7 +22,7 @@
     "page": "options.html",
     "chrome_style": true
   },
-  "browser_action": {
+  "action": {
     "default_popup": "popup.html"
   },
   "permissions": [
@@ -33,4 +31,4 @@
     "http:\/\/*\/",
     "https:\/\/*\/"
   ]
-}
\ No newline at end of file
+}