diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 83b7f19..834eb57 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -11,7 +11,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12']
 
     steps:
         - name: Checkout repo
diff --git a/.github/workflows/source-package.yml b/.github/workflows/source-package.yml
index a5971ae..2ef4ce2 100644
--- a/.github/workflows/source-package.yml
+++ b/.github/workflows/source-package.yml
@@ -19,10 +19,10 @@ jobs:
           [[ ! "$GITHUB_REF" =~ refs/tags ]] && exit
           echo "::set-output name=value::${GITHUB_REF#refs/tags/v}"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.12
         uses: actions/setup-python@v5
         with:
-          python-version: 3.9
+          python-version: 3.12
 
       - name: Build source archive and wheel
         shell: bash
diff --git a/README.md b/README.md
index c42b5ff..590415b 100644
--- a/README.md
+++ b/README.md
@@ -179,7 +179,7 @@ For [Conduit](https://gitlab.com/famedly/conduit) see their [installation instru
 Install
 -------
 
-1. Install Python 3.9 or newer
+1. Install Python 3.10 or newer
 2. Install dependencies in virtualenv
 
    ```bash
@@ -217,7 +217,7 @@ To update your installation, run `pip install --upgrade heisenbridge`
 Develop
 -------
 
-1. Install Python 3.9 or newer
+1. Install Python 3.10 or newer
 2. Install dependencies
 
    ```bash
diff --git a/pyproject.toml b/pyproject.toml
index a7cddbd..c41b7ce 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,4 +12,4 @@ line_length = 132
 
 [tool.black]
 line-length = 120
-target-version = ['py36']
+target-version = ['py310']
diff --git a/setup.cfg b/setup.cfg
index 640561f..f88c03e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -19,7 +19,7 @@ install_requires =
   python-socks[asyncio] >= 1.2.4
   aiohttp >=3.8.0, <4.0.0
 
-python_requires = >=3.9
+python_requires = >=3.10
 
 [options.entry_points]
 console_scripts =