diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6ecf2a75..c36c9a30 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -41,11 +41,11 @@ jobs:
       fail-fast: false
       matrix:
         python: [
-          "3.8",
           "3.9",
           "3.10",
           "3.11",
           "3.12",
+          "3.13",
           "pypy-3.9",
           "pypy-3.10",
         ]
@@ -57,11 +57,11 @@ jobs:
         ]
         include:
           # Test with older Trino versions for backward compatibility
-          - { python: "3.12", trino: "351", sqlalchemy: "~=1.4.0" }  # first Trino version
+          - { python: "3.13", trino: "351", sqlalchemy: "~=1.4.0" }  # first Trino version
           # Test with sqlalchemy 1.3
-          - { python: "3.12", trino: "latest", sqlalchemy: "~=1.3.0" }
+          - { python: "3.13", trino: "latest", sqlalchemy: "~=1.3.0" }
           # Test with sqlalchemy 2.0
-          - { python: "3.12", trino: "latest", sqlalchemy: "~=2.0.0" }
+          - { python: "3.13", trino: "latest", sqlalchemy: "~=2.0.0" }
     env:
       TRINO_VERSION: "${{ matrix.trino }}"
     steps:
diff --git a/README.md b/README.md
index 98cd44f5..3c911e4e 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Client for [Trino](https://trino.io/), a distributed SQL engine for interactive and batch big data processing.
 Provides a low-level client and a DBAPI 2.0 implementation and a SQLAlchemy adapter.
-It supports Python>=3.8 and PyPy.
+It supports Python>=3.9 and PyPy.
 
 [![Build Status](https://github.com/trinodb/trino-python-client/workflows/ci/badge.svg)](https://github.com/trinodb/trino-python-client/actions?query=workflow%3Aci+event%3Apush+branch%3Amaster)
 [![Trino Slack](https://img.shields.io/static/v1?logo=slack&logoColor=959DA5&label=Slack&labelColor=333a41&message=join%20conversation&color=3AC358)](https://trino.io/slack.html)
diff --git a/setup.py b/setup.py
index fcd7cf5c..65fa9605 100755
--- a/setup.py
+++ b/setup.py
@@ -70,18 +70,17 @@
         "Operating System :: Microsoft :: Windows",
         "Programming Language :: Python",
         "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 :: Implementation :: CPython",
         "Programming Language :: Python :: Implementation :: PyPy",
         "Topic :: Database :: Front-Ends",
     ],
-    python_requires=">=3.8",
+    python_requires=">=3.9",
     install_requires=[
-        "backports.zoneinfo;python_version<'3.9'",
         "python-dateutil",
         "pytz",
         # requests CVE https://github.com/advisories/GHSA-j8r2-6x86-q33q
diff --git a/tests/integration/test_dbapi_integration.py b/tests/integration/test_dbapi_integration.py
index 73478443..5cd77d16 100644
--- a/tests/integration/test_dbapi_integration.py
+++ b/tests/integration/test_dbapi_integration.py
@@ -15,11 +15,7 @@
 from datetime import date, datetime, time, timedelta, timezone
 from decimal import Decimal
 from typing import Tuple
-
-try:
-    from zoneinfo import ZoneInfo
-except ModuleNotFoundError:
-    from backports.zoneinfo import ZoneInfo
+from zoneinfo import ZoneInfo
 
 import pytest
 import requests
diff --git a/tests/integration/test_types_integration.py b/tests/integration/test_types_integration.py
index 09611d30..dc8fe683 100644
--- a/tests/integration/test_types_integration.py
+++ b/tests/integration/test_types_integration.py
@@ -3,11 +3,7 @@
 import uuid
 from datetime import date, datetime, time, timedelta, timezone, tzinfo
 from decimal import Decimal
-
-try:
-    from zoneinfo import ZoneInfo
-except ModuleNotFoundError:
-    from backports.zoneinfo import ZoneInfo
+from zoneinfo import ZoneInfo
 
 import pytest
 
diff --git a/tests/unit/test_client.py b/tests/unit/test_client.py
index b2ac31b1..82e19a0f 100644
--- a/tests/unit/test_client.py
+++ b/tests/unit/test_client.py
@@ -18,6 +18,7 @@
 from typing import Any, Dict, Optional
 from unittest import TestCase, mock
 from urllib.parse import urlparse
+from zoneinfo import ZoneInfoNotFoundError
 
 import gssapi
 import httpretty
@@ -59,11 +60,6 @@
     _RetryWithExponentialBackoff,
 )
 
-try:
-    from zoneinfo import ZoneInfoNotFoundError  # type: ignore
-except ModuleNotFoundError:
-    from backports.zoneinfo._common import ZoneInfoNotFoundError  # type: ignore
-
 
 @mock.patch("trino.client.TrinoRequest.http")
 def test_trino_initial_request(mock_requests, sample_post_response_data):
diff --git a/tox.ini b/tox.ini
index 19f05364..0db8fbe6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py37,py38,py39,py310,py311
+envlist = py39,py310,py311,py312,py313
 
 [testenv]
 extras = tests
diff --git a/trino/client.py b/trino/client.py
index 4fea8321..61db9444 100644
--- a/trino/client.py
+++ b/trino/client.py
@@ -47,13 +47,7 @@
 from email.utils import parsedate_to_datetime
 from time import sleep
 from typing import Any, Dict, List, Optional, Tuple, Union
-
-from trino.mapper import RowMapper, RowMapperFactory
-
-try:
-    from zoneinfo import ZoneInfo
-except ModuleNotFoundError:
-    from backports.zoneinfo import ZoneInfo
+from zoneinfo import ZoneInfo
 
 import requests
 from tzlocal import get_localzone_name  # type: ignore
@@ -61,6 +55,7 @@
 import trino.logging
 from trino import constants, exceptions
 from trino._version import __version__
+from trino.mapper import RowMapper, RowMapperFactory
 
 __all__ = ["ClientSession", "TrinoQuery", "TrinoRequest", "PROXIES"]
 
diff --git a/trino/dbapi.py b/trino/dbapi.py
index 9125a487..4f3dfdc6 100644
--- a/trino/dbapi.py
+++ b/trino/dbapi.py
@@ -27,11 +27,7 @@
 from time import time
 from typing import Any, Dict, List, NamedTuple, Optional  # NOQA for mypy types
 from urllib.parse import urlparse
-
-try:
-    from zoneinfo import ZoneInfo
-except ModuleNotFoundError:
-    from backports.zoneinfo import ZoneInfo
+from zoneinfo import ZoneInfo
 
 import trino.client
 import trino.exceptions
diff --git a/trino/mapper.py b/trino/mapper.py
index 48a905a6..b56037d7 100644
--- a/trino/mapper.py
+++ b/trino/mapper.py
@@ -2,16 +2,11 @@
 
 import abc
 import base64
-import sys
 import uuid
 from datetime import date, datetime, time, timedelta, timezone, tzinfo
 from decimal import Decimal
 from typing import Any, Dict, Generic, List, Optional, Tuple, TypeVar
-
-if sys.version_info >= (3, 9):
-    from zoneinfo import ZoneInfo
-else:
-    from backports.zoneinfo import ZoneInfo
+from zoneinfo import ZoneInfo
 
 import trino.exceptions
 from trino.types import (