diff --git a/bev/__version__.py b/bev/__version__.py
index f23a6b3..7e0dc0e 100644
--- a/bev/__version__.py
+++ b/bev/__version__.py
@@ -1 +1 @@
-__version__ = "0.13.0"
+__version__ = "0.13.1"
diff --git a/pyproject.toml b/pyproject.toml
index 8aa3321..30c67cd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = 'bev'
 dynamic = ['version', 'dependencies']
 description = 'A small manager for versioned data'
 readme = 'README.md'
-requires-python = '>=3.8'
+requires-python = '>=3.9'
 license = { file = 'LICENSE' }
 keywords = ['data', 'version control']
 authors = [