diff --git a/doc/CONTRIBUTORS b/doc/CONTRIBUTORS
index 0c387ba28..0c62fd1ed 100644
--- a/doc/CONTRIBUTORS
+++ b/doc/CONTRIBUTORS
@@ -70,6 +70,7 @@ you believe you should be listed, please send a note to sudo@sudo.ws.
     Kienenberger, Mike
     King, Dale
     King, Michael
+    Klyachkin, Andrey
     Knoble, Jim
     Knox, Tim
     Komarnitsky, Alek O.
@@ -90,6 +91,7 @@ you believe you should be listed, please send a note to sudo@sudo.ws.
     Markham, Paul
     Martinian, Emin
     Meskes, Michael
+    Michael, David
     Miller, Todd C.
     Minier, Loïc
     Moffat, Darren