diff --git a/README.md b/README.md
index 13ce354..a820c56 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# cx_Oracle version 8.2
+# cx_Oracle version 8.3 (Development)
 
 cx_Oracle is a Python extension module that enables access to Oracle
 Database.  It conforms to the [Python database API 2.0
@@ -7,7 +7,7 @@ of exclusions.  See the
 [homepage](https://oracle.github.io/python-cx_Oracle/index.html) for a
 feature list.
 
-cx_Oracle 8.2 has been tested with Python versions 3.6 through 3.9. You can use
+cx_Oracle 8.3 has been tested with Python versions 3.6 through 3.9. You can use
 cx_Oracle with Oracle 11.2, 12c, 18c, 19c and 21c client libraries. Oracle's
 standard client-server version interoperability allows connection to both older
 and newer databases. For example Oracle 19c client libraries can connect to
diff --git a/doc/src/conf.py b/doc/src/conf.py
index 92389cd..ebd07c8 100644
--- a/doc/src/conf.py
+++ b/doc/src/conf.py
@@ -40,9 +40,9 @@ author = 'Oracle'
 # other places throughout the built documents.
 #
 # The short X.Y version.
-version = '8.2'
+version = '8.3'
 # The full version, including alpha/beta/rc tags.
-release = '8.2.0'
+release = '8.3.0-dev'
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
diff --git a/doc/src/release_notes.rst b/doc/src/release_notes.rst
index 72891fd..df61f8f 100644
--- a/doc/src/release_notes.rst
+++ b/doc/src/release_notes.rst
@@ -7,6 +7,10 @@ cx_Oracle Release Notes
 
 For any deprecations, see :ref:`Deprecations <deprecations>`.
 
+Version 8.3 (TBD)
+-----------------
+
+
 Version 8.2 (May 2021)
 ----------------------
 
diff --git a/setup.py b/setup.py
index 53c5afc..d791ee7 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@ if sys.version_info[:2] < (3, 6):
 pkg_resources.require("setuptools>=40.6.0")
 
 # define build constants
-BUILD_VERSION = "8.2.0"
+BUILD_VERSION = "8.3.0-dev"
 
 # setup extra link and compile args
 extra_link_args = []