diff --git a/src/channels/telegram.ts b/src/channels/telegram.ts
index de1f70575..8e3e0c90c 100644
--- a/src/channels/telegram.ts
+++ b/src/channels/telegram.ts
@@ -210,6 +210,7 @@ registerChannelAdapter('telegram', {
       extractReplyContext,
       supportsThreads: false,
       transformOutboundText: sanitizeTelegramLegacyMarkdown,
+      maxTextLength: 4000,
     });
 
     const botUsernamePromise = fetchBotUsername(token);