diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8048af2..1feeebf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.4.3] - 2025-10-05
+
+### Bug Fixes
+
+- [`1ab577e`](https://gitea.pufereq.pl/judas/judas_protocol/commit/1ab577ebd583ed17f813d37745b5dc195855d9c3) **message.py**: provide `id_` in `ack()` and `hello()`
+
 ## [0.4.2] - 2025-10-05
 
 ### Bug Fixes
diff --git a/pyproject.toml b/pyproject.toml
index 63338cb..13043f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "uv_build"
 
 [project]
 name = "judas_protocol"
-version = "0.4.2"
+version = "0.4.3"
 description = "The judas protocol"
 readme = "README.md"
 authors = []
diff --git a/uv.lock b/uv.lock
index 4436a96..dfc600c 100644
--- a/uv.lock
+++ b/uv.lock
@@ -240,7 +240,7 @@ wheels = [
 
 [[package]]
 name = "judas-protocol"
-version = "0.4.2"
+version = "0.4.3"
 source = { editable = "." }
 
 [package.dev-dependencies]