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@@ -4,6 +4,8 @@ Pint Changelog
 0.21 (unreleased)
 -----------------
 
+- Add PEP621/631 support.
+  (Issue #1647)
 - Fix error when when re-registering a formatter.
   (PR #1629)
 - Add new SI prefixes: ronna-, ronto-, quetta-, quecto-.