diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 80dcd324..6600d6ea 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,7 +11,7 @@ jobs:
         os: [ubuntu-latest]
         # os: [ubuntu-latest, macos-latest, windows-latest]
         # os: [ubuntu-latest, macos-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v4
@@ -36,7 +36,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.11"]
+        python-version: ["3.12"]
     environment:
       name: pypi
       url: https://pypi.org/p/<your-pypi-project-name>
diff --git a/tox.ini b/tox.ini
index 6b0caa27..3fa450ce 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,8 @@
 [tox]
-envlist = isort, black, flake8, mypy, docs, py3{9,10,11,12}
+envlist = isort, black, flake8, mypy, docs, py3{10,11,12}
 
 [gh-actions]
 python =
-    3.9: py39
     3.10: py310
     3.11: isort, black, flake8, mypy, py311
     3.12: py312
@@ -46,7 +45,7 @@ commands=
 
 [testenv:docs]
 description = invoke sphinx-build to build the HTML docs
-basepython = python3.9
+basepython = python3.12
 extras = docs
 deps=
     sphinx>=3.4.3