diff --git a/google/cloud/sql/connector/connector.py b/google/cloud/sql/connector/connector.py
index 7a9964ca..853f06ef 100644
--- a/google/cloud/sql/connector/connector.py
+++ b/google/cloud/sql/connector/connector.py
@@ -17,13 +17,14 @@
 from __future__ import annotations
 
 import asyncio
+from collections.abc import Callable
 from functools import partial
 import logging
 import os
 import socket
 from threading import Thread
 from types import TracebackType
-from typing import Any, Callable
+from typing import Any
 
 import google.auth
 from google.auth.credentials import Credentials
diff --git a/google/cloud/sql/connector/monitored_cache.py b/google/cloud/sql/connector/monitored_cache.py
index d2ba2290..fe883c52 100644
--- a/google/cloud/sql/connector/monitored_cache.py
+++ b/google/cloud/sql/connector/monitored_cache.py
@@ -15,9 +15,10 @@
 from __future__ import annotations
 
 import asyncio
+from collections.abc import Callable
 import logging
 import ssl
-from typing import Any, Callable
+from typing import Any
 
 import aiohttp
 
diff --git a/google/cloud/sql/connector/refresh_utils.py b/google/cloud/sql/connector/refresh_utils.py
index 0edf5c34..4b2c3e2b 100644
--- a/google/cloud/sql/connector/refresh_utils.py
+++ b/google/cloud/sql/connector/refresh_utils.py
@@ -17,11 +17,12 @@
 from __future__ import annotations
 
 import asyncio
+from collections.abc import Callable
 import copy
 import datetime
 import logging
 import random
-from typing import Any, Callable
+from typing import Any
 
 import aiohttp
 from google.auth.credentials import Credentials
diff --git a/pyproject.toml b/pyproject.toml
index 93ed5eaf..c2e2cca6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ name = "cloud-sql-python-connector"
 authors = [{ name = "Google LLC", email = "googleapis-packages@google.com" }]
 license = "Apache-2.0"
 license-files = ["LICENSE"]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 readme = "README.md"
 classifiers = [
     # Should be one of:
@@ -33,11 +33,11 @@ classifiers = [
     "Intended Audience :: Developers",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "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",
     "Operating System :: OS Independent",
 ]
 dependencies = [
@@ -77,7 +77,7 @@ version = { attr = "google.cloud.sql.connector.version.__version__" }
 include = ["google*"]
 
 [tool.mypy]
-python_version = "3.9"
+python_version = "3.10"
 namespace_packages = true
 ignore_missing_imports = true
 warn_unused_configs = true
diff --git a/tests/unit/mocks.py b/tests/unit/mocks.py
index bba3a1d7..a694dc5b 100644
--- a/tests/unit/mocks.py
+++ b/tests/unit/mocks.py
@@ -18,10 +18,11 @@
 
 from __future__ import annotations
 
+from collections.abc import Callable
 import datetime
 import json
 import ssl
-from typing import Any, Callable, Literal
+from typing import Any, Literal
 
 from aiohttp import web
 from cryptography import x509