Stop new system update, again!

I'm on a rooted nexus 5 running stock kitkat 4.4.4 and xposed framework. I have no wish to update the operating system. I was able to stop the system update notifications in the past by simply disabling 3 receivers :

service:com.google.android.gms.update.SystemUpdate Service$ Receiver

com.google.android.gms.update.SystemUpdateService$ ActiveReceiver

com.google.android.gms.update.SystemUpdateService$ SecretCodeReceiver

This worked for a while, then the system update notification appeared again! This time, to get rid of the notification I needed to use several adb commands:

1. adb shell su -c pm disable com.google.android.gms/.update.SystemUpdateService$ActiveReceiver
2. adb shell su -c pm disable com.google.android.gms/.update.SystemUpdateService$Receiver
3. adb shell su -c pm disable com.google.android.gms/.update.SystemUpdateService$SecretCodeReceiver
4. adb shell su -c pm disable com.google.android.gsf/.update.SystemUpdateActivity
5. adb shell su -c pm disable com.google.android.gsf/.update.SystemUpdatePanoActivity
6. adb shell su -c pm disable com.google.android.gsf/.update.SystemUpdateService
7. adb shell su -c pm disable com.google.android.gsf/.update.SystemUpdateService$Receiver
8. adb shell su -c pm disable com.google.android.gsf/.update.SystemUpdateService$SecretCodeReceiver

That worked - for a while..... 😠
The notification to update to 5.0.1 has reappeared again. What else should I do to stop it this time?

Appreciate any help.