diff --git a/telegram/bot.py b/telegram/bot.py
index a7483b5..6649fda 100644
--- a/telegram/bot.py
+++ b/telegram/bot.py
@@ -101,7 +101,7 @@ unanswered_count: dict[tuple[int, int], int] = {}  # (chat_id, user_id) → unan
 
 # Conversation history — last N exchanges for prompt context (Ganymede: high-value change)
 MAX_HISTORY_USER = 5
-MAX_HISTORY_CHAT = 10  # Ganymede: group chats need more context (multiple users)
+MAX_HISTORY_CHAT = 30  # Group chats: multiple users, longer threads
 conversation_history: dict[tuple[int, int], list[dict]] = {}  # (chat_id, user_id) → [{user, bot}]