diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6db71eab..2a80ac2b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 0.2.4 (2022-07-27)
+
+### Fix
+
+- add mypy and some type hints
+
 ## 0.2.3 (2022-07-27)
 
 ### Fix
diff --git a/pyproject.toml b/pyproject.toml
index 6f503c26..3493829b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "kstreams"
-version = "0.2.3"
+version = "0.2.4"
 description = "Build simple kafka streams applications"
 authors = ["Marcos Schroh <marcos.schroh@kpn.com>"]
 license = "Apache-2.0"
@@ -70,7 +70,7 @@ profile = "black"
 known_first_party = ["kstreams", "tests", "examples"]
 
 [tool.commitizen]
-version = "0.2.3"
+version = "0.2.4"
 tag_format = "$version"
 version_files = [
     "pyproject.toml:version",