diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9a2081a0..909c6f6c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "pypy3.8"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "pypy3.9"]
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     steps:
diff --git a/CHANGES b/CHANGES
index b5633619..528e7bd2 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,21 @@
 Bleach changes
 ==============
 
+Version 6.2.0 (in development)
+------------------------------
+**Backwards incompatible changes**
+
+* Dropped support for Python 3.8. (#737)
+
+**Security fixes**
+
+None
+
+**Bug fixes**
+
+None
+
+
 Version 6.1.0 (October 6th, 2023)
 ---------------------------------
 
diff --git a/Makefile b/Makefile
index b2c8abeb..bf9045d3 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ docs:  ## Build docs
 
 .PHONY: lint
 lint:  ## Lint files
-	tox exec -e py39-format-check -- black --target-version=py38 --exclude=_vendor setup.py bleach/ tests/ tests_website/
+	tox exec -e py39-format-check -- black --target-version=py39 --exclude=_vendor setup.py bleach/ tests/ tests_website/
 	tox -e py39-lint
 	tox -e py39-format-check
 
diff --git a/requirements-dev.txt b/requirements-dev.txt
index ea398dd7..669f1fe8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -10,4 +10,4 @@ tox-gh-actions==3.2.0
 twine==5.1.1
 wheel==0.43.0
 
-Sphinx==7.4.4; python_version > "3.8"
+Sphinx==7.4.4
diff --git a/setup.py b/setup.py
index 2c075254..35cb6cb4 100755
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@ def get_version():
     include_package_data=True,
     package_data={"": ["README.rst"]},
     zip_safe=False,
-    python_requires=">=3.8",
+    python_requires=">=3.9",
     install_requires=INSTALL_REQUIRES,
     extras_require=EXTRAS_REQUIRE,
     classifiers=[
@@ -63,7 +63,6 @@ def get_version():
         "Programming Language :: Python",
         "Programming Language :: Python :: 3 :: Only",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
diff --git a/tox.ini b/tox.ini
index 5c409331..e6c4bc25 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,9 +2,9 @@
 
 [tox]
 envlist =
-    py{38,39,310,311,312,py3}
-    py{38,39,310,311,312,py3}-tinycss2
-    py{38,39,310,311,312}-build-no-lang
+    py{39,310,311,312,py3}
+    py{39,310,311,312,py3}-tinycss2
+    py{39,310,311,312}-build-no-lang
     py39-docs
     py39-format-check
     py39-lint
@@ -12,12 +12,11 @@ envlist =
 
 [gh-actions]
 python =
-    3.8: py38
     3.9: py39
     3.10: py310
     3.11: py311
     3.12: py312
-    pypy-3.8: pypy3
+    pypy-3.9: pypy3
 
 [testenv]
 deps = -rrequirements-dev.txt
@@ -25,12 +24,6 @@ commands =
     pytest {posargs:-v}
     python setup.py build
 
-[testenv:py38-tinycss2]
-deps = -rrequirements-dev.txt
-extras = css
-commands =
-    pytest {posargs:-v}
-
 [testenv:py39-tinycss2]
 deps = -rrequirements-dev.txt
 extras = css
@@ -61,12 +54,6 @@ extras = css
 commands =
     pytest {posargs:-v}
 
-[testenv:py38-build-no-lang]
-setenv =
-    LANG=
-commands =
-    python setup.py build
-
 [testenv:py39-build-no-lang]
 setenv =
     LANG=