Class CActivation has a destructor and a pointer to it is upcast to class IOperation which doesn't have a virtual destructor

I am getting the below warning message from the static code analysis tool:

dtor_in_derived: Class CActivation has a destructor and a pointer to it is upcast to class IOperation which doesn't have a virtual destructor.

Below is my code snippet:

CActivation.h file

class CActivation : public IOperation
{
public:
    CActivation();
    ~CActivation();
};

CActivation.cpp file

CActivation::CActivation()
{
    CoInitialize(0);
}

CActivation::~CActivation()
{
    CoUninitialize();
}

IOperation.h file

class IOperation
{

public:
    IOperation();
    ~IOperation();
};

Could anyone please help me with the root cause?