diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 3d655d19..54a015a9 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 4.3.0
+current_version = 4.3.1
 commit = true
 tag = true
 tag_name = {new_version}
diff --git a/docs/conf.py b/docs/conf.py
index 965be28e..c10eb7fd 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -58,7 +58,7 @@
 # built documents.
 #
 # The short X.Y version.
-version = '4.3.0'
+version = '4.3.1'
 release = version
 
 # The language for content autogenerated by Sphinx. Refer to documentation
diff --git a/docs/index.rst b/docs/index.rst
index 480ad64a..be91fff8 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -106,7 +106,7 @@ See ``python -mzeep --help`` for more information about this command.
 
 .. note:: Zeep follows `semver`_ for versioning, however bugs can always occur.
           So as always pin the version of zeep you tested with
-          (e.g. ``zeep==4.3.0``').
+          (e.g. ``zeep==4.3.1``').
 
 
 .. _semver: http://semver.org/
diff --git a/pyproject.toml b/pyproject.toml
index db09a9c4..c151100a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "zeep"
-version = "4.3.0"
+version = "4.3.1"
 description = "A Python SOAP client"
 readme = "README.md"
 license = { text = "MIT" }
diff --git a/src/zeep/__init__.py b/src/zeep/__init__.py
index c295d139..564534b9 100644
--- a/src/zeep/__init__.py
+++ b/src/zeep/__init__.py
@@ -4,7 +4,7 @@
 from zeep.transports import Transport
 from zeep.xsd.valueobjects import AnyObject
 
-__version__ = "4.3.0"
+__version__ = "4.3.1"
 __all__ = [
     "AsyncClient",
     "CachingClient",