diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d9969c95..b9e15081 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -4,11 +4,13 @@ on:
   push:
     branches:
       - "master"
+      - "main"
       - "test-me-*"
 
   pull_request:
     branches:
       - "master"
+      - "main"
 
 # Cancel running jobs for the same workflow and branch.
 concurrency:
@@ -34,7 +36,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ windows-latest, ubuntu-latest ]
-        python: [ "3.8","3.10","3.11","3.12", "pypy-3.8" ]
+        python: [ "3.9","3.10","3.11","3.12", "pypy-3.9" ]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/changelog.d/.keep b/changelog.d/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/changelog.d/320.misc.rst b/changelog.d/320.misc.rst
new file mode 100644
index 00000000..c2f0fc68
--- /dev/null
+++ b/changelog.d/320.misc.rst
@@ -0,0 +1 @@
+add towncrier configuration
diff --git a/changelog.d/320.removal.rst b/changelog.d/320.removal.rst
new file mode 100644
index 00000000..63aefbab
--- /dev/null
+++ b/changelog.d/320.removal.rst
@@ -0,0 +1 @@
+remove python3.8 support
diff --git a/pyproject.toml b/pyproject.toml
index 3c304f3e..7fa93a5a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ dynamic = ["version"]
 description = "execnet: rapid multi-Python deployment"
 readme = {"file" = "README.rst", "content-type" = "text/x-rst"}
 license = "MIT"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 authors = [
     { name = "holger krekel and others" },
 ]
@@ -22,7 +22,6 @@ classifiers = [
     "Operating System :: MacOS :: MacOS X",
     "Operating System :: Microsoft :: Windows",
     "Operating System :: POSIX",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -96,7 +95,7 @@ include = [
 ]
 
 [tool.mypy]
-python_version = "3.8"
+python_version = "3.9"
 mypy_path = ["src"]
 files = ["src", "testing"]
 strict = true
@@ -112,3 +111,7 @@ module = [
     "gevent.thread.*",
 ]
 ignore_missing_imports = true
+
+[tool.towncrier]
+filename = "CHANGELOG.rst"
+directory = "changelog.d"
\ No newline at end of file
diff --git a/src/execnet/gateway_base.py b/src/execnet/gateway_base.py
index 22756778..2d77606d 100644
--- a/src/execnet/gateway_base.py
+++ b/src/execnet/gateway_base.py
@@ -18,12 +18,12 @@
 import traceback
 import weakref
 from _thread import interrupt_main
+from collections.abc import Iterator
+from collections.abc import MutableSet
 from io import BytesIO
 from typing import Any
 from typing import Callable
-from typing import Iterator
 from typing import Literal
-from typing import MutableSet
 from typing import Protocol
 from typing import cast
 from typing import overload
diff --git a/src/execnet/multi.py b/src/execnet/multi.py
index 90742f26..8a3d1a26 100644
--- a/src/execnet/multi.py
+++ b/src/execnet/multi.py
@@ -8,15 +8,15 @@
 
 import atexit
 import types
+from collections.abc import Iterable
+from collections.abc import Iterator
+from collections.abc import Sequence
 from functools import partial
 from threading import Lock
 from typing import TYPE_CHECKING
 from typing import Any
 from typing import Callable
-from typing import Iterable
-from typing import Iterator
 from typing import Literal
-from typing import Sequence
 from typing import overload
 
 from . import gateway_bootstrap
diff --git a/testing/conftest.py b/testing/conftest.py
index a7c2eede..ad7e59d0 100644
--- a/testing/conftest.py
+++ b/testing/conftest.py
@@ -2,10 +2,10 @@
 
 import shutil
 import sys
+from collections.abc import Generator
+from collections.abc import Iterator
 from functools import lru_cache
 from typing import Callable
-from typing import Generator
-from typing import Iterator
 
 import pytest
 
diff --git a/tox.ini b/tox.ini
index 4c743a66..bcff5eea 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist=py{38,39,310,311,312,pypy38},docs,linting
+envlist=py{39,310,311,312,pypy39},docs,linting
 isolated_build = true
 
 [testenv]