diff --git a/package-lock.json b/package-lock.json
index 421f973..7d110ad 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "optmeowt",
-  "version": "4.3.1",
+  "version": "5.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "optmeowt",
-      "version": "4.3.1",
+      "version": "5.0.0",
       "license": "ISC",
       "dependencies": {
         "animate.css": "^4.1.1",
diff --git a/src/manifests/firefox/manifest-dist.json b/src/manifests/firefox/manifest-dist.json
index 7e41f8d..cc55a19 100644
--- a/src/manifests/firefox/manifest-dist.json
+++ b/src/manifests/firefox/manifest-dist.json
@@ -4,19 +4,37 @@
   "version": "5.0.0",
   "description": "OptMeowt allows Web users to make use of their rights to opt out from the sale and sharing of personal data",
   "permissions": [
-    "webRequest",
     "webRequestBlocking",
-    "<all_urls>",
+    "declarativeNetRequest",
+    "webRequest",
     "webNavigation",
     "storage",
     "activeTab",
     "cookies",
-    "tabs"
+    "tabs",
+    "scripting"
+  ],
+  "declarative_net_request": {
+    "rule_resources": [
+      {
+        "id": "universal_GPC",
+        "enabled": true,
+        "path": "rules/universal_gpc_rules.json"
+      },
+      {
+        "id": "GPC_exceptions",
+        "enabled": true,
+        "path": "rules/gpc_exceptions_rules.json"
+      }
+    ]
+  },
+  "host_permissions": [
+    "<all_urls>"
   ],
   "icons": {
     "128": "assets/face-icons/icon128-face-circle.png"
   },
-  "browser_action": {
+  "action": {
     "default_title": "OptMeowt",
     "default_popup": "popup.html"
   },
@@ -34,9 +52,18 @@
   "background": {
     "scripts": ["background.bundle.js"]
   },
-  "web_accessible_resources": [
-    "json/*.json"
-  ],
-  "manifest_version": 2,
-  "incognito": "spanning"
+  "web_accessible_resources": [{
+	  "resources": ["content-scripts/injection/gpc-dom.js"],
+	  "matches": ["<all_urls>"]
+	}],
+  "manifest_version": 3,
+  "incognito": "spanning",
+  "content_security_policy": {
+    "extension_pages": "script-src 'self'; object-src 'self'"
+  },
+  "browser_specific_settings": {
+    "gecko": {
+      "id": "{7f22397f-fb61-47e2-9e4b-4ddd98faa275}"
+    }
+  }
 }