Kint depth_limit error after upgrading to 4.1.8

After I upgrade to 4.1.8 I get an error saying:

Access to undeclared static property: Kint\Kint::$depth_limit

pointing:

SYSTEMPATH/CodeIgniter.php at line 252

Code:

Kint::$depth_limit         = $config->maxDepth;

I comment it out, then it works. What should I actually do/change?

Start using Composer!
I don't know how you updated, but even in the zip installation there is an up-to-date version of Kint.

I updated manually (system + some files in Config including Kint). I think I should be able to do it manually without any problem.

Do you use Composer?
If you have vendor/ directory in the project root, you are using Composer.

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