diff --git a/oauthenticator/_version.py b/oauthenticator/_version.py
index 38bc01f9..50b7e277 100644
--- a/oauthenticator/_version.py
+++ b/oauthenticator/_version.py
@@ -1,7 +1,7 @@
 # __version__ should be updated using tbump, based on configuration in
 # pyproject.toml, according to instructions in RELEASE.md.
 #
-__version__ = "16.3.1"
+__version__ = "16.3.2.dev"
 
 # version_info looks like (1, 2, 3, "dev") if __version__ is 1.2.3.dev
 version_info = tuple(int(p) if p.isdigit() else p for p in __version__.split("."))
diff --git a/pyproject.toml b/pyproject.toml
index 0464ba70..46c7a97c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ omit = [
 github_url = "https://github.com/jupyterhub/oauthenticator"
 
 [tool.tbump.version]
-current = "16.3.1"
+current = "16.3.2.dev"
 regex = '''
     (?P<major>\d+)
     \.
diff --git a/setup.py b/setup.py
index 102d11b6..67088e4e 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ def run(self):
 setup_args = dict(
     name='oauthenticator',
     packages=find_packages(),
-    version="16.3.1",
+    version="16.3.2.dev",
     description="OAuthenticator: Authenticate JupyterHub users with common OAuth providers",
     long_description=open("README.md").read(),
     long_description_content_type="text/markdown",