If in the test folder I upgrade via npm to gulp4, in the main folder where do I learn to stay gulp 3?

Question

npm

in the folder where I learn gulp3 from me, but there is a test folder where the project is transferred and where I want gulp4 to be
If I update via npm to gulp4 in the test folder, will gulp 3 stay in the main folder where I learn?

The bottom line is that in one folder, for example, to have a project with gulp3, in another folder with gulp4