diff --git a/contributors.md b/contributors.md
index b1f246c35..8a3643d75 100644
--- a/contributors.md
+++ b/contributors.md
@@ -17,6 +17,8 @@ Thank you to all who have provided guidance on the development of this software.
 - Yanfei Li, National Renewable Energy Laboratory
 - Nicholas Long, National Renewable Energy Laboratory
 - Robert Lutes, Pacific Northwest National Laboratory
+- Kefei Mo, Pacific Northwest National Laboratory
+- Erik Paulson, Independent
 - Jermy Thomas, National Renewable Energy Laboratory
 - Christian Veje, University of Southern Denmark
 - Draguna Vrabie, Pacific Northwest National Laboratory