diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ca281b9..f8c56af 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,21 +19,18 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - '3.8'
-          - '3.9'
           - '3.10'
           - '3.11'
           - '3.12'
           - '3.13'
-          - 'pypy-3.8'
-          - 'pypy-3.9'
+          - '3.14'
           - 'pypy-3.10'
           - 'pypy-3.11'
         toxenv: [py]
         include:
-          - python-version: '3.8'
+          - python-version: '3.10'
             toxenv: lint
-          - python-version: '3.8'
+          - python-version: '3.10'
             toxenv: typing
     steps:
       - name: Check out repository
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ef61e2..716d6db 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 v0.3.0 (in development)
 -----------------------
 - Remove unused `typing_extensions` dependency
+- Support Python 3.14
+- Drop support for Python 3.8 and 3.9
 
 v0.2.2 (2024-12-01)
 -------------------
diff --git a/README.rst b/README.rst
index 5fc898c..49ecfd2 100644
--- a/README.rst
+++ b/README.rst
@@ -35,7 +35,7 @@ recipients' raw e-mail addresses from an ``EmailMessage``.
 
 Installation
 ============
-``mailbits`` requires Python 3.8 or higher.  Just use `pip
+``mailbits`` requires Python 3.10 or higher.  Just use `pip
 <https://pip.pypa.io>`_ for Python 3 (You have pip, right?) to install it::
 
     python3 -m pip install mailbits
@@ -78,11 +78,11 @@ b'text/plain; charset="utf-8"; name*=utf-8\'\'r%C3%A9sum%C3%A9.txt'
 .. code:: python
 
     class MessageDict(TypedDict):
-        unixfrom: Optional[str]
-        headers: Dict[str, Any]
-        preamble: Optional[str]
+        unixfrom: str | None
+        headers: dict[str, Any]
+        preamble: str | None
         content: Any
-        epilogue: Optional[str]
+        epilogue: str | None
 
     mailbits.email2dict(msg: email.message.Message, include_all: bool = False) -> MessageDict
 
@@ -300,7 +300,7 @@ __ https://docs.python.org/3/library/email.examples.html
 
 .. code:: python
 
-    mailbits.format_addresses(addresses: Iterable[Union[str, Address, Group]], encode: bool = False) -> str
+    mailbits.format_addresses(addresses: Iterable[str | Address | Group], encode: bool = False) -> str
 
 Convert an iterable of e-mail address strings (of the form
 "``foo@example.com``", without angle brackets or a display name),
@@ -341,8 +341,8 @@ into an ``Address`` object.
 
 .. code:: python
 
-    mailbits.parse_addresses(s: Union[str, email.headerregistry.AddressHeader]) \
-        -> List[Union[email.headerregistry.Address, email.headerregistry.Group]]
+    mailbits.parse_addresses(s: str | email.headerregistry.AddressHeader) \
+        -> list[email.headerregistry.Address | email.headerregistry.Group]
 
 Parse a formatted list of e-mail addresses or the contents of an
 ``EmailMessage``'s "To", "CC", "BCC", etc. header into a list of ``Address``
@@ -354,7 +354,7 @@ and/or ``Group`` objects.
 
 .. code:: python
 
-    mailbits.recipient_addresses(msg: email.message.EmailMessage) -> List[str]
+    mailbits.recipient_addresses(msg: email.message.EmailMessage) -> list[str]
 
 Return a sorted list of all of the distinct e-mail addresses (not including
 display names) in an ``EmailMessage``'s combined "To", "CC", and "BCC" headers.
diff --git a/pyproject.toml b/pyproject.toml
index 90597a2..5ea0d67 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ name = "mailbits"
 dynamic = ["version"]
 description = "Assorted e-mail utility functions"
 readme = "README.rst"
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 license = "MIT"
 license-files = ["LICENSE"]
 authors = [
@@ -28,12 +28,11 @@ keywords = [
 classifiers = [
     "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",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
     "Intended Audience :: Developers",
diff --git a/src/mailbits/email2dict.py b/src/mailbits/email2dict.py
index f1e3f76..a48ec73 100644
--- a/src/mailbits/email2dict.py
+++ b/src/mailbits/email2dict.py
@@ -4,16 +4,16 @@
 from email import headerregistry as hr
 from email.message import Message
 import inspect
-from typing import Any, Optional, TypedDict
+from typing import Any, TypedDict
 from .misc import message2email, parse_addresses
 
 
 class MessageDict(TypedDict):
-    unixfrom: Optional[str]
+    unixfrom: str | None
     headers: dict[str, Any]
-    preamble: Optional[str]
+    preamble: str | None
     content: Any
-    epilogue: Optional[str]
+    epilogue: str | None
 
 
 def process_unique_string_header(ush: list[Any]) -> str:
@@ -108,7 +108,7 @@ def process_cte_header(cteh: list[Any]) -> str:
     return cteh[0].cte  # TODO: When is this different from `str(cteh[0])`?
 
 
-def process_mime_version_header(mvh: list[Any]) -> Optional[str]:
+def process_mime_version_header(mvh: list[Any]) -> str | None:
     assert len(mvh) == 1
     assert isinstance(mvh[0], hr.MIMEVersionHeader)
     return mvh[0].version
diff --git a/tox.ini b/tox.ini
index 09baac6..8620e72 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = lint,typing,py38,py39,py310,py311,py312,py313,pypy3
+envlist = lint,typing,py310,py311,py312,py313,py314,pypy3
 skip_missing_interpreters = True
 isolated_build = True
 minversion = 3.3.0