No. The mutability of truth must be regarded from the point of view of the intellect because the truth of intellect consists in its conformity to the thing understood.
The truth of the divine intellect is immutable. But the truth of our intellect is mutable (not because it is itself the subject of change, but insofar as our intellect changes from truth to falsity, for thus forms may be called mutable). Whereas the truth of the divine intellect is that according to which natural things are said to be true, and this is altogether immutable.