diff --git a/CHANGELOG.md b/CHANGELOG.md
index 878a990..9f27f63 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,4 +16,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Alembic async migration setup with initial schema
 - Pydantic-settings configuration module
 - Integration test infrastructure with per-test rollback
-- Update configuration into subgroups
\ No newline at end of file
+- Update configuration into subgroups
+- Plugin system: Protocol contracts, registry with validation, event bus
+- Plugin auto-discovery via importlib package scanning
\ No newline at end of file