diff --git a/CHANGELOG_PENDING.md b/CHANGELOG_PENDING.md
index 9287b64fc95..ea745d4e18b 100644
--- a/CHANGELOG_PENDING.md
+++ b/CHANGELOG_PENDING.md
@@ -96,3 +96,4 @@ Friendly reminder, we have a [bug bounty program](https://hackerone.com/tendermi
 
 - [consensus] \#9229 fix round number of `enterPropose` when handling `RoundStepNewRound` timeout. (@fatcat22)
 - [docker] \#9073 enable cross platform build using docker buildx
+- [blocksync] \#9518 handle the case when the sending queue is full: retry block request after a timeout
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