diff --git a/.python-version b/.python-version
index e4fba21..24ee5b1 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.12
+3.13
diff --git a/pyproject.toml b/pyproject.toml
index 57fae5d..cac6d06 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ dynamic = ["version"]
 readme = "README.md"
 license = { text = "MIT License" }
 authors = [{ name = "phil", email = "phil.dev@philome.mooo.com" }]
-requires-python = ">=3.12"
+requires-python = ">=3.13"
 dependencies = [
   "aiosmtplib>=3.0.2",
   "dateutils>=0.6.12",