diff --git a/discord-scripts/thread-management/check-thread-archiving.ts b/discord-scripts/thread-management/check-thread-archiving.ts
index f7bc0250..e9d3e9d7 100644
--- a/discord-scripts/thread-management/check-thread-archiving.ts
+++ b/discord-scripts/thread-management/check-thread-archiving.ts
@@ -31,7 +31,7 @@ import {
 
 // The maximum time between any two messages after which a thread is considered
 // async.
-const MAX_HEURISTIC_SYNC_THREAD_DURATION = 60 * MINUTE // 60 * MINUTE
+const MAX_HEURISTIC_SYNC_THREAD_DURATION = 12 * HOUR // 60 * MINUTE
 // How frequently threads are checked for archive requirements.
 const THREAD_CHECK_CADENCE = 12 * HOUR // 12 * HOUR
 // Use a ThreadAutoArchiveDuration as we'll still lean on Discord to