diff --git a/pep-0654.rst b/pep-0654.rst
index 63e076a63d6..4b449be3b3b 100644
--- a/pep-0654.rst
+++ b/pep-0654.rst
@@ -1432,6 +1432,23 @@ See Also
 * Reporting Multiple Errors in the Hypothesis library: [7]_.
 
 
+Acknowledgements
+================
+
+We wish to thank Nathaniel J. Smith and the other Trio developers for their
+work on structured concurrency. We borrowed the idea of constructing an
+exception tree whose nodes are exceptions from MultiError, and the ``split()``
+API from the design document for MultiError V2.  The discussions on python-dev
+and elsewhere helped us improve upon the first draft of the PEP in multiple
+ways, both the design and the exposition. For this we appreciate all those who
+contributed ideas and asked good questions:  Matthew Barnett, Ran Benita,
+Emily Bowman, Joao Bueno, Baptiste Carvello, Nick Coghlan, Caleb Donovick,
+Greg Ewing, Ethan Furman, Larry Hastings, Zac Hatfield-Dodds, Chris Jerdonek,
+Jim Jewett, Sven Kunze, Glenn Linderman, Paul Moore, Ivan Pozdeev, Terry Reedy,
+Barry Scott, Damian Shaw, Cameron Simpson, Paul Sokolovsky, Steve Stagg,
+Marco Sulla, and Petr Viktorin.
+
+
 References
 ==========