diff --git a/THANKS b/THANKS
index 153a63f1..1d169695 100644
--- a/THANKS
+++ b/THANKS
@@ -181,6 +181,7 @@ has been important. :-) In alphabetical order:
   - Christian Weisgerber
   - Dan Weiss
   - Bert Wesarg
+  - Mark Wielaard
   - Fredrik Wikstrom
   - Jim Wilcoxson
   - Ralf Wildenhues