diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 252c741..eb5be6a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.5', '3.6', '3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.5', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11-dev']
       fail-fast: false
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }} - Py ${{ matrix.python-version }}
diff --git a/setup.py b/setup.py
index 111f343..57e0bd1 100644
--- a/setup.py
+++ b/setup.py
@@ -40,20 +40,22 @@ def get_version():
     install_requires=[
         "pyserial>=3.0.1,<4.0",
     ],
+    python_requires=">=3.5",
     classifiers=[
-        "Development Status :: 4 - Beta",
+        "Development Status :: 5 - Production/Stable",
         "Environment :: Console",
         "Intended Audience :: Developers",
         "Intended Audience :: Education",
         "License :: OSI Approved :: MIT License",
         "Operating System :: POSIX",
         "Operating System :: Microsoft :: Windows",
-        "Programming Language :: Python :: 2.7",
-        "Programming Language :: Python :: 3.3",
-        "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Topic :: Education",
         "Topic :: Software Development :: Embedded Systems",
     ],