diff --git a/docs/source/conf.py b/docs/source/conf.py
index 2be541c..c05bef7 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -8,7 +8,7 @@
 # -- Project information ------------------------------------------------------
 project   = "ChemInformant"
 author    = "Ang"
-release   = "2.4.0"
+release   = "2.4.3"
 copyright = f"{datetime.now().year}, {author}"
 
 # -- General configuration ----------------------------------------------------
diff --git a/pyproject.toml b/pyproject.toml
index 52f9346..88d8053 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "ChemInformant"
-version = "2.4.2"
+version = "2.4.3"
 authors = [
   { name = "Zhiang He", email = "ang@hezhiang.com" },
 ]
diff --git a/src/ChemInformant/__init__.py b/src/ChemInformant/__init__.py
index b0d9539..fcaabb6 100644
--- a/src/ChemInformant/__init__.py
+++ b/src/ChemInformant/__init__.py
@@ -29,6 +29,8 @@
 
 from __future__ import annotations
 
+__version__ = "2.4.3"
+
 from . import api_helpers
 
 # Cache setup