diff --git a/man/empire.6 b/man/empire.6
index e395adb0..eb8bbffb 100644
--- a/man/empire.6
+++ b/man/empire.6
@@ -76,10 +76,12 @@ Primary Author is Dave Pare (mr-frog@scam.berkeley.edu)
 Secondary authors/contributors may include:
 James Anderson (jwa@k.cs.cmu.edu)
 Jeff Anton (anton@postgres.berkeley.edu)
+Markus Armbruster (armbru@pond.sub.org)
 Phill Everson (everson@compsci.bristol.ac.uk)
 Steven Grimm (koreth@ucscb.UCSC.EDU)
 Lewis R. Jansen (lrj@helios.tn.cornell.edu)
 Mike St. Johns (stjohns@edn-vax.arpa)
+Ron Koenderink (rkoenderink@yahoo.ca)
 Nick Lai (lai@cs.ucla.edu)
 Shelley Louie (slouie@cory.berekely.edu)
 Steve McClure (ionica@empire.cx)