can't activate mysql2

[Danissss]

When I did 'rake db:create` I got following errors

Specified 'mysql2' for database adapter, but the gem is not loaded. Add `gem 'mysql2'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord).

Gem::LoadError: can't activate mysql2 (~> 0.3.13), already activated mysql2-0.4.10. Make sure all dependencies are added to Gemfile.

Here is my Gemfile

ruby '2.5.1'
gem 'rails', '4.2.0'
gem 'mysql2', '~> 0.4.9'

System: macos catalina
MySQL: mysql Ver 8.0.17 for osx10.14 on x86_64 (Homebrew)

[sodabrew]

Rails 4.2.0 required mysql2 0.3.x as documented here: https://github.com/brianmario/mysql2#compatibility

You should use the last of the Rails 4.2.x series if you are indeed tied to Rails 4.2.x, and that will work with mysql2 0.4.x.

Suggested Gemfile:

ruby '2.5.1'
gem 'rails', '~> 4.2.0'
gem 'mysql2', '~> 0.4.9'

Consider using a later version of Ruby 2.5.x as well.