diff --git a/README/CREDITS b/README/CREDITS
index 4b078518422a9bd6ae51594942c30ff6bb19f337..304d835026807edff3c76a24f1c201b4cf575818 100644
--- a/README/CREDITS
+++ b/README/CREDITS
@@ -14,6 +14,10 @@ N: Maarten Ballintijn
 E: maartenb@xs4all.nl
 D: initial linux port
 
+N: Paul Balm
+E: p.balm@nikhef.nl
+D: implemented TDatabasePDG::ConvertGeant3ToPDG
+
 N: Guy Barrand
 E: barrand@lal.in2p3.fr
 D: contribution to GUI classes
@@ -128,6 +132,7 @@ D: Lorentz vector classes, PDG interface
 N: Axel Naumann
 E: axel@fnal.gov
 D: THtml improvements (namespace, header/footer)
+D: many suggestions for Trees
 
 N: John Odonnell
 E: odonnell@lanl.gov