diff --git a/pyproject.toml b/pyproject.toml
index 865fcd3..57c380b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -78,7 +78,7 @@ config-settings = 'setup-args=--vsenv build-dir=build'
 
 [tool.mypy]
 files = 'src'
-python_version = '3.9'
+python_version = '3.10'
 show_error_codes = true
 strict = true