diff --git a/source/manifest.json b/source/manifest.json
index f55bb10..dc0efa1 100644
--- a/source/manifest.json
+++ b/source/manifest.json
@@ -2,6 +2,7 @@
   "manifest_version": 2,
   "name": "Sample WebExtension",
   "version": "0.0.0",
+
   "icons": {
     "16": "assets/icons/favicon-16.png",
     "32": "assets/icons/favicon-32.png",
@@ -11,24 +12,31 @@
   "description": "Sample description",
   "homepage_url": "https://github.com/abhijithvijayan/web-extension-starter",
   "short_name": "Sample Name",
+
   "permissions": [
     "activeTab",
     "storage",
     "http://*/*",
     "https://*/*"
   ],
-  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
+
+  "__dev__content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
+  "__prod__content_security_policy": "script-src 'self'; object-src 'self'",
+
   "__chrome|firefox__author": "abhijithvijayan",
   "__opera__developer": {
     "name": "abhijithvijayan"
   },
+
   "__firefox__applications": {
     "gecko": {
       "id": "{754FB1AD-CC3B-4856-B6A0-7786F8CA9D17}"
     }
   },
+
   "__chrome__minimum_chrome_version": "49",
   "__opera__minimum_opera_version": "36",
+
   "browser_action": {
     "default_popup": "popup.html",
     "default_icon": {
@@ -41,18 +49,21 @@
     "__chrome|opera__chrome_style": false,
     "__firefox__browser_style": false
   },
+
   "__chrome|opera__options_page": "options.html",
   "options_ui": {
     "page": "options.html",
     "open_in_tab": true,
     "__chrome__chrome_style": false
   },
+
   "background": {
     "scripts": [
       "js/background.bundle.js"
     ],
     "__chrome|opera__persistent": false
   },
+
   "content_scripts": [{
     "matches": [
       "http://*/*",