diff --git a/extension/contentscript.js b/extension/contentscript.js
index 74c8c55..c805423 100644
--- a/extension/contentscript.js
+++ b/extension/contentscript.js
@@ -1,6 +1,6 @@
 function inject(url) {
     var s = document.createElement('script');
-    s.src = chrome.extension.getURL(url);
+    s.src = chrome.runtime.getURL(url);
     s.onload = function() { this.remove(); };
     (document.head || document.documentElement).appendChild(s);
 }
diff --git a/extension/manifest.json b/extension/manifest.json
index 73fb3cf..e419430 100644
--- a/extension/manifest.json
+++ b/extension/manifest.json
@@ -8,6 +8,11 @@
         "js": ["contentscript.js"],
         "run_at": "document_start"
     }],
-    "web_accessible_resources": ["lib.js", "injected.js"],
-    "manifest_version": 2
+	"web_accessible_resources": [
+        {
+            "resources": ["lib.js", "injected.js"],
+            "matches": ["<all_urls>"]
+        }
+	],
+    "manifest_version": 3
 }