How to disable sparkle.framework updates for specific app?

I need to disable auto updates for one of the apps installed on my Mac (OS X 10.11.4). The developer keeps releasing new versions but I want to stay at a specific version that works just as I need. * This is not a store app, I downloaded it from the developer's site. * I know this app uses the Sparkle.framework for autoupdating. * The application does not offer any options/preferences to control automatic updates. They just happen. Every couple of days the application updates itself and I have to manually downgrade to the version I want to keep. Is there anything I can do so the application doesn't update automatically? I'm confortable with the command line and with editing low level configuration, but I am not familiar with the sparkle update process.