diff --git a/setup.py b/setup.py
index 8f6606f..0378da7 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@
     name='python-docs-theme',
     # Version is date based as year.month[.serial], where serial is used
     # if multiple releases are needed to address build failures.
-    version='2020.12',
+    version='2020.12.post1',
     description='The Sphinx theme for the CPython docs and related projects',
     long_description=long_description,
     author='PyPA',