How to do function overloading with std::shared_ptr

I basically want to do the following,

class C {
    public:
    void F(std::function<void(std::shared_ptr<void>)>){}
    void F(std::function<void(std::shared_ptr<int>)>){}
};

However, when I compile and I try to use the function with std::shared_ptr<void> I get an error like:

error: call to member function 'F' is ambiguous

How may I solve this?