diff --git a/COPYRIGHT b/COPYRIGHT
index 61d0be05690..68cd19bd71b 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -18,6 +18,7 @@ Marcus Comstedt
 Paolo Costabel
 Thierry Crozat
 Ivan Dubrov
+Frantisek Dufka
 Oystein Eftevaag
 Kovacs Endre Janos
 David Eriksson