diff --git a/THANKS b/THANKS
index e31f401c..a6a7a672 100644
--- a/THANKS
+++ b/THANKS
@@ -94,6 +94,7 @@ has been important. :-) In alphabetical order:
   - Thomas Klausner
   - Richard Koch
   - Anton Kochkov
+  - Harri K. Koskinen
   - Ville Koskinen
   - Sergey Kosukhin
   - Marcin Kowalczyk