diff --git a/THANKS b/THANKS
index 4187ccfa..a2c452d1 100644
--- a/THANKS
+++ b/THANKS
@@ -67,6 +67,7 @@ has been important. :-) In alphabetical order:
   - Thomas Klausner
   - Richard Koch
   - Ville Koskinen
+  - Marcin Kowalczyk
   - Jan Kratochvil
   - Christian Kujau
   - Stephan Kulow