diff --git a/.tool-versions b/.tool-versions
index faadbed8..eeafc534 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,3 +1,3 @@
-python     3.11.5
+python     3.12.4
 poetry     1.8.3
 git-chglog 0.15.2
diff --git a/pyproject.toml b/pyproject.toml
index f8541534..2b269ef4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ classifiers = [
 micropy = 'micropy.app:app'
 
 [tool.poetry.dependencies]
-python = ">=3.9,<3.12"
+python = ">=3.12,<3.13"
 boltons = "==23.1.1"
 cachier = "2.3.0"
 Jinja2 = "3.1.4"