diff --git a/participants.md b/participants.md
index 2cd5e3d..5991099 100644
--- a/participants.md
+++ b/participants.md
@@ -21,6 +21,7 @@ Index | Name | Email | Completed date
 017 | Martin   | martin012020@aol.com          | 2020-02-02
 018 | Holt Hou | holy.holt@aol.com      | 2020-02-02
 019 | Hong Guo | tsabo_gh@163.com      | 2020-02-02
+020 | Cathy Tan | lotusLeaffy@protonmail.com      | 2020-02-02
 
 ## Ongoing participants