diff --git a/pheme/version/__version__.py b/pheme/version/__version__.py
index 780ee507..a303b67d 100644
--- a/pheme/version/__version__.py
+++ b/pheme/version/__version__.py
@@ -2,4 +2,4 @@
 
 # THIS IS AN AUTOGENERATED FILE. DO NOT TOUCH!
 
-__version__ = "21.8.0"
+__version__ = "21.8.1.dev1"
diff --git a/pyproject.toml b/pyproject.toml
index 51dcea1a..c0a5fbfa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pheme"
-version = "21.8.0"
+version = "21.8.1.dev1"
 authors = ["Greenbone AG <info@greenbone.net>"]
 license = "AGPL-3.0-or-later"
 readme = "README.md"