diff --git a/README.md b/README.md
index 4a30ad69..733ace31 100644
--- a/README.md
+++ b/README.md
@@ -65,7 +65,7 @@ details of use and many examples.
 
 Release notes and details of the latest changes for this specific release
 can be found in the GitHub repository
-[here](https://github.com/databrickslabs/dbldatagen/blob/release/v0.4.0/CHANGELOG.md)
+[here](https://github.com/databrickslabs/dbldatagen/blob/release/v0.4.001/CHANGELOG.md)
 
 # Installation
 
diff --git a/dbldatagen/_version.py b/dbldatagen/_version.py
index 5c1c4c93..0f252039 100644
--- a/dbldatagen/_version.py
+++ b/dbldatagen/_version.py
@@ -34,7 +34,7 @@ def get_version(version):
     return version_info
 
 
-__version__ = "0.4.0"  # DO NOT EDIT THIS DIRECTLY!  It is managed by bumpversion
+__version__ = "0.4.001"  # DO NOT EDIT THIS DIRECTLY!  It is managed by bumpversion
 __version_info__ = get_version(__version__)
 
 
diff --git a/docs/source/conf.py b/docs/source/conf.py
index f7a9dc08..e214e95f 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -32,7 +32,7 @@
 author = 'Databricks Inc'
 
 # The full version, including alpha/beta/rc tags
-release = "0.4.0"  # DO NOT EDIT THIS DIRECTLY!  It is managed by bumpversion
+release = "0.4.001"  # DO NOT EDIT THIS DIRECTLY!  It is managed by bumpversion
 
 # -- General configuration ---------------------------------------------------
 
diff --git a/python/.bumpversion.cfg b/python/.bumpversion.cfg
index c6efa034..6facd260 100644
--- a/python/.bumpversion.cfg
+++ b/python/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.4.0
+current_version = 0.4.001
 commit = False
 tag = False
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+){0,1}(?P<release>\D*)(?P<build>\d*)
diff --git a/setup.py b/setup.py
index bd316c3d..c3fc0b53 100644
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,7 @@
 
 setuptools.setup(
     name="dbldatagen",
-    version="0.4.0",
+    version="0.4.001",
     author="Ronan Stokes, Databricks",
     description="Databricks Labs -  PySpark Synthetic Data Generator",
     long_description=long_description,