diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4adfa6e93..fbb7d7674 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@
 
 ### Fixes
 - Heartbeat replies now strip repeated `HEARTBEAT_OK` tails to avoid accidental “OK OK” spam.
+- Duration strings now accept `h` (hours) where durations are parsed (e.g., heartbeat intervals).
 - WhatsApp send now preserves existing JIDs (including group `@g.us`) instead of coercing to `@s.whatsapp.net`. (Thanks @arun-8687.)
 - Telegram/WhatsApp: reply context stays in `Body`/`ReplyTo*`, but outbound replies no longer thread to the original message. (Thanks @joshp123 for the PR and follow-up question.)
 - WhatsApp web creds persistence hardened; credentials are restored before auth checks and QR login auto-restarts if it stalls.