The First Vatican Council, in the Constitution Son of God, Chapter 4, proclaimed:
“The doctrine of faith which God revealed was not presented as a philosophical discovery to be perfected by human ingenuity, but handed down as a divine deposit to the Bride of Christ to be faithfully guarded and infallibly declared. Therefore, that meaning of the sacred dogmas which Holy Mother Church declared once and for all must be maintained in perpetuity, and one must never depart from that meaning.”
Then, in Canon 3 on Faith and Reason, it decrees: “If anyone asserts that, after the dogmas have been established by the Church, a meaning different from that which the Church understood and understands should ever be attributed to them according to the progress of knowledge, let him be anathema.”