In the resulting Add Database Reference dialog, just add the databases that your stored procedures refer to (there's even a dropdown list specifically for adding references to the master and msdb ...

Helping & empowering business owners for over 15 years, helping them to understand how to protect own interests, build bridges to amplify joint ventures, adapting new business practices and solutions.

Helping & empowering business owners for over 15 years, helping them to understand how to protect own interests, build bridges to amplify joint ventures, adapting new business practices and solutions.