Displaying fully-qualified package name for attribute type

Is it possible to show the fully-qualified package name for the type of an attribute in a class diagram? If so, how does one achieve this?

Background:

I’m using a third-party library that reuses the class name ‘Base’ for various different purposes but said classes are declared in different namespaces. Without showing the fully-qualified package name for attribute types it’s nigh impossible to see at a glance which type is actually being referred to.