diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5e106f7..57655e9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,13 +33,16 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install flake8 flake8-pyproject ruff==0.15.22
+        python -m pip install flake8 flake8-pyproject ruff==0.15.22 validate-pyproject[all]
     - name: Lint with flake8
       run: |
         flake8 .
     - name: Lint with ruff
       run: |
         ruff check .
+    - name: Check pyproject
+      run: |
+        validate-pyproject pyproject.toml
 
   build-check:
     runs-on: ubuntu-latest
diff --git a/pyproject.toml b/pyproject.toml
index a5dad2a..e2125a5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,12 +43,13 @@ classifiers = [
     "Operating System :: Unix",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.7",
-    "Programming Audience :: Python :: 3.8",
+    "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 :: Software Development :: Libraries",
     "Topic :: Software Development :: Testing",
 ]