Why are there no patches for gog users?

[Krelian]

Hi, i have soma on galaxy while a friend got it on steam, he just confirmed that there was a new patch not long ago, that would make it the 4th patch on steam? we had 1 on galaxy, and even though i have tried everything i can't get rid of the stutter, my options right now if i want to play to game is either bother my friend for his steam account or pirate the game, and why should i after buying it just because i bought it on gog

[Googolplex]

Actually there is only one patch released: 1.02
Other patches on Steam are beta. 1.03 is coming on GOG when it's final.