#18357: add tests for dictview set difference.  Patch by Fraser Tweedale.
diff --git a/Misc/ACKS b/Misc/ACKS
index 822a523..736887d 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1042,6 +1042,7 @@
 Stephen Turner
 Theodore Turocy
 Bill Tutt
+Fraser Tweedale
 Doobee R. Tzeck
 Eren Türkay
 Lionel Ulmer