Java - Factory and Strategy Patterns with Generics

I'm trying to implement a Strategy + Factory pattern using generics. The goal is to return to a client class an implementation of the interface DocumentDao that can deal with a type T extends Document, so I've multiple Dao interface extending DocumentDao for different subtypes of Document.

Here is my code:

public class Document { ... }

public class DocumentA extends Document { ... }

public class DocumentB extends Document { ... }

public interface DocumentDao<T extends Document> {
   public void update(T document);
}

public interface DocumentADao<DocumentA> {}

public interface DocumentDaoFactory {
   public DocumentDao<T extends Document> getDaoInstance(Class<T> clazz);
}

Then I try to use the Factory:

private <T extends Document> void someMethod(T document) {
   ...
   DocumentDao<T> documentDao = this.documentDaoFactory.getDaoInstance(document.getClass());
   documentDao.update(document);
   ...
}

But the compiler complaints about the getDaoInstance() call:

Type mismatch: cannot convert from DocumentDao<? extends AbstractGDriveDocument<?>> to DocumentDao<T>

How to deal with this situation? How can I obtain a similar solution?

Thanks