diff --git a/.github/workflows/type-check.yml b/.github/workflows/type-check.yml
index 7321c90..1d800ba 100644
--- a/.github/workflows/type-check.yml
+++ b/.github/workflows/type-check.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.8"
+          python-version: "3.10"
 
       - name: Install packages
         run: |
diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
index b19733c..0834f49 100644
--- a/.github/workflows/unit-test.yml
+++ b/.github/workflows/unit-test.yml
@@ -24,7 +24,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v3
diff --git a/README.md b/README.md
index d1db57c..9e3c547 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ You can try this example in a Python interpreter.
 
 ```console
 $ python
-Python 3.8.16 (...)
+Python 3.10.13 (...)
 ...
 ...
 >>>
diff --git a/pyproject.toml b/pyproject.toml
index 8d645a5..91fd7e7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,17 +6,16 @@ build-backend = "hatchling.build"
 name = "apluggy"
 description = 'A wrapper of "pluggy" to support asyncio and context managers'
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 license = "MIT"
 keywords = []
 authors = [{ name = "Tai Sakuma", email = "tai.sakuma@gmail.com" }]
 classifiers = [
   "Development Status :: 4 - Beta",
   "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",
 ]
 dependencies = [
   "pluggy>=1.0",
@@ -52,7 +51,7 @@ cov = "pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=src/ap
 no-cov = "cov --no-cov {args}"
 
 [[tool.hatch.envs.test.matrix]]
-python = ["38", "39", "310", "311"]
+python = ["310", "311", "312"]
 
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
@@ -66,7 +65,7 @@ doctest_optionflags = ["ELLIPSIS"]
 
 [tool.black]
 skip-string-normalization = true
-target_version = ['py38', 'py39', 'py310', 'py311']
+target_version = ['py310', 'py311', 'py312']
 
 [tool.coverage.run]
 branch = true