SpecFlow Parallel and non Parallel

I'm using SpecFlow to automate my web tests and using parallel execution to speed them up.

The issue i have is that one test which checks that invalid passwords are rejected will lock the user account if run 3 times without a successful login.

I've set them up to perform a successful login afterwards however running in parallel means against multiple targets they are ran at the same time and still lock the account.

Is there a way I can set just this test to not run in parallel so it doesn't lock the account and still allow the others to run in parallel?