Why can't my derived class find my base class's type alias?

Let's start with the code example, because it should be easy to see what's going on:

template <typename T>
struct Base
{
    using Type = int;
};

template<typename T>
struct Derived : public Base<T>
{
    // error: unknown type name 'Type'
    using NewType = Type;
};

int main()
{}

I would have expected Derived to find Base's Type alias. However, none of the compilers I've tried (MSVC, Clang, GCC) seem to like this code.

More surprisingly, changing Derived's inheritance to:

struct Derived : public Base<int>

fixes the problem.

Is there something I can change to allow Derived to find Base's alias?