Close issue #6210: Implement PEP 409
diff --git a/Misc/ACKS b/Misc/ACKS
index 48ef080..e9077c3 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -338,6 +338,7 @@
 Tadayoshi Funaba
 Gyro Funch
 Peter Funk
+Ethan Furman
 Geoff Furnish
 Ulisses Furquim
 Hagen Fürstenau