diff --git a/members.yaml b/members.yaml
index ba5770d..aed19fb 100644
--- a/members.yaml
+++ b/members.yaml
@@ -64,4 +64,4 @@ members:
   - sso214
   - jemlog
   - nmin11
-  - thalals
+  - ujin2021
diff --git a/teams.yaml b/teams.yaml
index b6b0827..c30c76e 100644
--- a/teams.yaml
+++ b/teams.yaml
@@ -26,6 +26,7 @@
   - github: dojinyou
   - github: 5uhwann
   - github: rachel5004
+  - github: ujin2021
   
 24-optimizing-java-1:
   members: