diff --git a/pages/SWEN Retreat 2025.md b/pages/SWEN Retreat 2025.md
index bb18d1b8..7b642c0e 100644
--- a/pages/SWEN Retreat 2025.md	
+++ b/pages/SWEN Retreat 2025.md	
@@ -44,6 +44,7 @@ progress:: {{renderer :todomaster}}
 			- Topics of the groups
 				- Green SW Engineering
 					- Sustainabiolity
+				- Simlation in federated digital twins
 				- Cultural Heritage
 					- RecSys
 				- Multi-view Modeling