diff --git a/keyserver/src/keyserver.js b/keyserver/src/keyserver.js
--- a/keyserver/src/keyserver.js
+++ b/keyserver/src/keyserver.js
@@ -25,6 +25,7 @@
   markVersionDeployedResponder,
 } from './responders/version-responders.js';
 import { websiteResponder } from './responders/website-responders.js';
+import { webWorkerResponder } from './responders/webworker-responders.js';
 import { onConnection } from './socket/socket.js';
 import {
   multerProcessor,
@@ -121,6 +122,7 @@
 
       // $FlowFixMe express-ws has side effects that can't be typed
       router.ws('/ws', onConnection);
+      router.get('/worker/:worker', webWorkerResponder);
       router.get('*', htmlHandler(websiteResponder));
 
       router.post(
diff --git a/keyserver/src/responders/webworker-responders.js b/keyserver/src/responders/webworker-responders.js
new file mode 100644
--- /dev/null
+++ b/keyserver/src/responders/webworker-responders.js
@@ -0,0 +1,29 @@
+// @flow
+
+import type { $Request, $Response } from 'express';
+import path from 'path';
+
+function webWorkerResponder(req: $Request, res: $Response): void {
+  let workerPath;
+  let headers = { 'Content-Type': 'application/javascript' };
+
+  if (req.params.worker === 'notif') {
+    workerPath = 'pushNotif.build.js';
+    headers = {
+      ...headers,
+      'Service-Worker-Allowed': '/',
+    };
+  }
+
+  if (!workerPath) {
+    res.sendStatus(404);
+    return;
+  }
+
+  const filePath = path.resolve('app_compiled', 'webworkers', workerPath);
+  res.sendFile(filePath, {
+    headers,
+  });
+}
+
+export { webWorkerResponder };