Revolution Slider Update

Hi,
I would like to update Revolution Slider, which was part of Highend theme.
When I installed the theme, RS have been installed in version 4.5.6. Now version 4.5.9 is available, but WP don’t offer me update in Dashboard or Plugins section. It is possible to update the plugin manually, but I need slider install package, which I don’t know where to download from.
Could you help me with updating this/other plugin(s)?

Thanks