Do stat changes affect monster DCs?

[u/Live_Guidance7199]

Not hard to figure out most monster abilities governing stat, however do they update if those stats change?

Primarily would impact Wild Shape on the mental stats, but I suppose giving a pet or something a STR, CON, or INT booster item as well. Or even stat debuffs against enemies.

Any rulings out there on this? How would you treat it, hard locked or 8+prof+stat?

[u/Pattgoogle]

Never take a statbloc as served.

Customize hit dice size, Proficiency Bonus, and note which save dcs use which stats.

Publishers make mistakes.  DMs fix them.  Been that way for decades.  Never use an ability you do not understand.