diff --git a/setup.py b/setup.py
index 7c054cd..2fde469 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 from setuptools import setup
 from setuptools import find_packages
 
-version = "2021.09.20"
+version = "2021.09.20.post1"
 
 install_requires = [
     "acme>=1.8.0",