diff --git a/src/apps/aboutsystem/AboutSystem.cpp b/src/apps/aboutsystem/AboutSystem.cpp
index b289f58372..7c7acafe7f 100644
--- a/src/apps/aboutsystem/AboutSystem.cpp
+++ b/src/apps/aboutsystem/AboutSystem.cpp
@@ -394,12 +394,15 @@ AboutView::AboutView(const BRect &rect)
 		"Jan Klötzke\n"
 		"Marcin Konicki\n"
 		"Kurtis Kopf\n"
+		"Tomáš Kučera\n"
+		"Luboš Kulič\n"
 		"Thomas Kurschel\n"
 		"Elad Lahav\n"
 		"Santiago Lema\n"
 		"Oscar Lesta\n"
 		"Jerome Leveque\n"
 		"Graham MacDonald\n"
+		"Jan Matějek\n"
 		"Brian Matzon\n"
 		"Christopher ML Zumwalt May\n"
 		"Andrew McCall\n"