diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3efd065..8799422 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 <!-- MAINTENANCE: When bumping workspace.version in Cargo.toml, add a new ## [x.y.z] section
      above [Unreleased] with date YYYY-MM-DD and move relevant [Unreleased] entries there. -->
 
+## Week of 2026-05-27
+
+### Fixed
+
+- `EventRouter` com `RetryPolicy::Exponential`: o atraso `base_delay * 2^n` usa `Duration::saturating_mul` e limita o expoente a 31, evitando panic por overflow de `Duration` em retentativas longas ou `base_delay` grande ([#13](https://github.com/JaimeJunr/serverust/pull/13)).
+- `SqsBroker::handle_sqs_event` (Lambda ESM + `ReportBatchItemFailures`): mensagens sem handler para a fila do ARN ou sem `event_source_arn` válido entram em `batchItemFailures` quando há `messageId`, em vez de ack silencioso pela Lambda ([#12](https://github.com/JaimeJunr/serverust/pull/12)).
+
 ## [Unreleased]
 
 ### Fixed