diff --git a/apps/frontend/src/components/new-launch/providers/slack/slack.provider.tsx b/apps/frontend/src/components/new-launch/providers/slack/slack.provider.tsx
index 4507700e..6e413093 100644
--- a/apps/frontend/src/components/new-launch/providers/slack/slack.provider.tsx
+++ b/apps/frontend/src/components/new-launch/providers/slack/slack.provider.tsx
@@ -23,5 +23,5 @@ export default withProvider({
   CustomPreviewComponent: undefined,
   dto: SlackDto,
   checkValidity: undefined,
-  maximumCharacters: 280,
+  maximumCharacters: 400000,
 });