diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2bd68451..139da3b1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,13 +22,12 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
         toxenv: [py]
         include:
-          - python-version: "3.8"
+          - python-version: "3.9"
             toxenv: minreqs
 
     services:
diff --git a/README.rst b/README.rst
index 9c8350ec..b515dbdf 100644
--- a/README.rst
+++ b/README.rst
@@ -28,7 +28,7 @@ Features
 Installation
 -------------
 
-Python 3.8 or later is needed. Using pip to install LinkChecker:
+Python 3.9 or later is needed. Using pip to install LinkChecker:
 
 ``pip3 install linkchecker``
 
diff --git a/doc/src/index.rst b/doc/src/index.rst
index e106b289..ed4ac8c9 100644
--- a/doc/src/index.rst
+++ b/doc/src/index.rst
@@ -10,7 +10,7 @@ Introduction
 LinkChecker is a free, `GPL <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>`_
 licensed website validator.
 LinkChecker checks links in web documents or full websites.
-It runs on Python 3 systems, requiring Python 3.8 or later.
+It runs on Python 3 systems, requiring Python 3.9 or later.
 
 Visit the project on `GitHub <https://github.com/linkchecker/linkchecker>`_.
 
diff --git a/doc/upgrading.txt b/doc/upgrading.txt
index 7f1db863..5e7fc2d4 100644
--- a/doc/upgrading.txt
+++ b/doc/upgrading.txt
@@ -1,6 +1,10 @@
 Upgrading
 =========
 
+Migrating from 10.3 to 10.x
+---------------------------
+Python 3.9 or newer is required.
+
 Migrating from 10.2 to 10.3
 ---------------------------
 Python 3.8 or newer is required.
diff --git a/linkcheck/__init__.py b/linkcheck/__init__.py
index c8ebf39e..ce2bb3f6 100644
--- a/linkcheck/__init__.py
+++ b/linkcheck/__init__.py
@@ -20,11 +20,11 @@ Main package for link checking.
 # version checks
 import sys
 
-if sys.version_info < (3, 8, 0, 'final', 0):
+if sys.version_info < (3, 9, 0, 'final', 0):
     import platform
 
     raise SystemExit(
-        "This program requires Python 3.8 or later instead of %s."
+        "This program requires Python 3.9 or later instead of %s."
         % platform.python_version()
     )
 
diff --git a/pyproject.toml b/pyproject.toml
index ab79206c..caee384a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,14 +11,13 @@ classifiers = [
     "Development Status :: 5 - Production/Stable",
     "License :: OSI Approved :: GNU General Public License v2 or later (GPLv2+)",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
 ]
 
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 
 dependencies = [
     "requests >= 2.20",
diff --git a/tox.ini b/tox.ini
index f7038cf3..cd7ba097 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py3{8,9,10,11,12}, minreqs
+envlist = py3{9,10,11,12}, minreqs
 
 [base]
 deps =