Disabling Individual Update Notifications Does Not Work

[segler]

With a CM10-based JB ROM I use Dolphin 8.7.0 and don't want a newer version. When I try to turn off Dolphin update notifications under Settings...Apps, yes, I can remove the checkmark, and, yes, I do get the warning message. However, later the Play Store update notification for Dolphin still comes in.

I want that puppy turned off. Has anybody succeeded in doing this?