diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 43be1c4..1638fbb 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -39,7 +39,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python_version: ["3.10", "3.12", "3.13"]
+        python_version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     runs-on: ${{ matrix.os }}
 
diff --git a/confection/util.py b/confection/util.py
index 066a50a..d1859b9 100644
--- a/confection/util.py
+++ b/confection/util.py
@@ -1,17 +1,10 @@
 import functools
-import sys
 from copy import deepcopy
-from typing import Any, Callable, Iterator, TypeVar
+from typing import Any, Callable, Iterator, Protocol, TypeVar
 
 from pydantic import GetCoreSchemaHandler
 from pydantic_core import core_schema
 
-if sys.version_info < (3, 8):
-    # Ignoring type for mypy to avoid "Incompatible import" error (https://github.com/python/mypy/issues/4427).
-    from typing_extensions import Protocol  # type: ignore
-else:
-    from typing import Protocol
-
 _DIn = TypeVar("_DIn")
 
 
diff --git a/requirements.txt b/requirements.txt
index 2e361be..9777041 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,12 +1,10 @@
 pydantic>=2.0,<3.0
-typing_extensions>=3.7.4.1,<5.0.0; python_version < "3.8"
 srsly>=2.4.0,<3.0.0
 # Development requirements
 catalogue>=2.0.3,<2.1.0
 pathy>=0.3.5
 pytest>=5.2.0,!=7.1.0
-mypy>=1.7.0,<1.8.0; platform_machine != 'aarch64' and python_version >= '3.8'
-types-dataclasses>=0.1.3; python_version < '3.7'
+mypy>=1.7.0,<1.8.0; platform_machine != 'aarch64'
 numpy>=1.15.0
 black>=22.0,<23.0
 flake8>=3.8.0,<6.0.0
diff --git a/setup.cfg b/setup.cfg
index 60eda83..b4e04e4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -17,22 +17,19 @@ classifiers =
     Operating System :: MacOS :: MacOS X
     Operating System :: Microsoft :: Windows
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.6
-    Programming Language :: Python :: 3.7
-    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
     Topic :: Scientific/Engineering
 
 [options]
 zip_safe = true
 include_package_data = true
-python_requires = >=3.9,<3.14
+python_requires = >=3.10
 install_requires =
     pydantic>=2.0,<3.0
-    typing_extensions>=3.7.4.1,<5.0.0; python_version < "3.8"
     srsly>=2.4.0,<3.0.0
 
 [sdist]