diff --git a/THANKS b/THANKS
index e020e8cf..e45a4e86 100644
--- a/THANKS
+++ b/THANKS
@@ -12,6 +12,7 @@ In alphabetical order:
   - Jean-loup Gailly
   - Per Øyvind Karlsen
   - Ville Koskinen
+  - Stephan Kulow
   - Jim Meyering
   - Igor Pavlov
   - Mikko Pouru