diff --git a/packages/catcher_core/CHANGELOG.md b/packages/catcher_core/CHANGELOG.md
index 555c3ae..03a0aa5 100644
--- a/packages/catcher_core/CHANGELOG.md
+++ b/packages/catcher_core/CHANGELOG.md
@@ -1,3 +1,13 @@
+## 0.3.19
+
+### Bug Fixes
+
+- Preserve structured transport failure details through NAPI HTTP retries, including error codes and chained causes, so host applications can diagnose connection failures after retries are exhausted.
+
+### Packaging
+
+- Synchronize the Flutter package version with the unified Catcher `0.3.19` release; the Dart API surface is otherwise unchanged.
+
 ## 0.3.18
 
 ### Bug Fixes