As you know, back in 2014, Google released the HTTPS ranking boost to give a little ranking boost to URLs that went HTTPS. Well, it seems that ranking boost isn't going to get any stronger.
Gary Illyes from Google said on Twitter that Google has no plans to increase the weight of the HTTPS ranking boost, more than it already is. He said "we revisited the idea a few months back but we decided against it."
Here is Gary's tweet:
@dr_pete No. We revisited the idea a few months back but we decided against it.
— Gary Illyes ᕕ( ᐛ )ᕗ (@methode) April 21, 2017
Google denied previous allegations that they increased the weight of the HTTPS signal in the past as well.
Keep in mind, there are now estimates that 50% of Google's search results have HTTPS URLs in them.
Going HTTPS is not a bad thing and Google is pretty good at migrating all the ranking signals when you move. But if you mess up, it can be pretty bad for your rankings. So be careful.
Forum discussion at Twitter.
