diff --git a/ideas/304-core-chat.md b/ideas/304-core-chat.md
index b51622f..66c01c8 100644
--- a/ideas/304-core-chat.md
+++ b/ideas/304-core-chat.md
@@ -9,6 +9,7 @@ contributors:
     - Tetiana
     - Hester
     - Rachel
+    - Maciej
 budget:
 - actual: xxx
 - estimate: yyy