In the US, the Responsorial Psalm does not have to be taken from the day’s lectionary verbatim if there’s an acceptable substitute for good pastoral reason. It must be Biblical text, though, and looks like it needs Bishop’s approval.
See GIRM # 57 and 61 (a portion of the latter here):
“In the Dioceses of the United States of America, instead of the Psalm assigned in the Lectionary, there may be sung either the Responsorial Gradual from the Graduale Romanum, or the Responsorial Psalm or the Alleluia Psalm from the Graduale Simplex, as described in these books, or an antiphon and Psalm from another collection of Psalms and antiphons, including Psalms arranged in metrical form, providing that they have been approved by the Conference of Bishops or the Diocesan Bishop. Songs or hymns may not be used in place of the Responsorial Psalm.”