pybench prep_times calculation error (closes #11895)
diff --git a/Misc/ACKS b/Misc/ACKS
index c8e7e62..e614e0d 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -795,6 +795,7 @@
 Monty Taylor
 Amy Taylor
 Anatoly Techtonik
+Mikhail Terekhov
 Tobias Thelen
 James Thomas
 Robin Thomas