diff --git a/package.json b/package.json
index bcddb428..005ead5c 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
   },
   "devDependencies": {
     "@types/axios": "0.14.0",
+    "@types/chrome": "^0.0.70",
     "@types/webpack": "4.4.0",
     "prettier": "^1.13.4",
     "ts-loader": "4.3.0",
diff --git a/release/manifest.json b/release/manifest.json
index 7b28bc06..43745a6d 100644
--- a/release/manifest.json
+++ b/release/manifest.json
@@ -2,8 +2,10 @@
   "name": "Ku-nya",
   "version": "1.0.1",
   "manifest_version": 2,
-  "description": "Ku-nya picks up illustrations on the pixiv ranking randomly and displays them on your new tab. Enjoy your pixiv life!",
-  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
+  "description":
+    "Ku-nya picks up illustrations on the pixiv ranking randomly and displays them on your new tab. Enjoy your pixiv life!",
+  "content_security_policy":
+    "script-src 'self' 'unsafe-eval'; object-src 'self'",
   "icons": {},
   "chrome_url_overrides": {
     "newtab": "newTab.html"
@@ -12,5 +14,10 @@
     "default_popup": "popup.html"
   },
   "background": {},
-  "permissions": ["https://www.pixiv.net/"]
+  "permissions": [
+    "webRequest",
+    "webRequestBlocking",
+    "https://www.pixiv.net/",
+    "https://i.pximg.net/"
+  ]
 }
diff --git a/src/lib/requestModifier.ts b/src/lib/requestModifier.ts
new file mode 100644
index 00000000..89e0a91a
--- /dev/null
+++ b/src/lib/requestModifier.ts
@@ -0,0 +1,29 @@
+const refererValue = 'https://www.pixiv.net/'
+const refererTarget = 'https://i.pximg.net/*'
+
+/** Modifies request Referer HTTP header */
+chrome.webRequest.onBeforeSendHeaders.addListener(
+  details => {
+    let refererFound = false
+
+    for (const n in details.requestHeaders) {
+      refererFound = details.requestHeaders[n].name.toLowerCase() == 'referer'
+
+      if (refererFound) {
+        // Rewrite Referer header
+        details.requestHeaders[n].value = refererValue
+        break
+      }
+    }
+
+    if (!refererFound) {
+      // If no referer header is set, set one
+      details.requestHeaders.push({ name: 'Referer', value: refererValue })
+    }
+    return { requestHeaders: details.requestHeaders }
+  },
+  {
+    urls: [refererTarget],
+  },
+  ['requestHeaders', 'blocking'],
+)
diff --git a/src/main.tsx b/src/main.tsx
index a99473fc..67a6ccb7 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -1,5 +1,6 @@
 import { h, render } from 'preact'
 import App from './components/App'
+import './lib/requestModifier'
 import { getOptions } from './lib/options'
 
 document.addEventListener('DOMContentLoaded', async event => {
diff --git a/yarn.lock b/yarn.lock
index a1966b3f..46881433 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8,6 +8,22 @@
   dependencies:
     axios "*"
 
+"@types/chrome@^0.0.70":
+  version "0.0.70"
+  resolved "https://registry.yarnpkg.com/@types/chrome/-/chrome-0.0.70.tgz#634bfa4aff89d00e8c88f6c37b26663e8d7a220e"
+  dependencies:
+    "@types/filesystem" "*"
+
+"@types/filesystem@*":
+  version "0.0.28"
+  resolved "https://registry.yarnpkg.com/@types/filesystem/-/filesystem-0.0.28.tgz#3fd7735830f2c7413cb5ac45780bc45904697b0e"
+  dependencies:
+    "@types/filewriter" "*"
+
+"@types/filewriter@*":
+  version "0.0.28"
+  resolved "https://registry.yarnpkg.com/@types/filewriter/-/filewriter-0.0.28.tgz#c054e8af4d9dd75db4e63abc76f885168714d4b3"
+
 "@types/node@*":
   version "8.0.47"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-8.0.47.tgz#968e596f91acd59069054558a00708c445ca30c2"