diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
index 5574b50..463457e 100644
--- a/.github/workflows/python-tests.yml
+++ b/.github/workflows/python-tests.yml
@@ -62,14 +62,14 @@ jobs:
             python-version: '3.13'
             toxenv: py313-test-pytest83
           - os: windows-latest
-            python-version: '3.13'
-            toxenv: py313-test-pytestdev
+            python-version: '3.14-dev'
+            toxenv: py314-test-pytestdev
           - os: macos-latest
-            python-version: '3.12'
-            toxenv: py312-test-pytestdev
+            python-version: '3.14-dev'
+            toxenv: py314-test-pytestdev
           - os: ubuntu-latest
-            python-version: '3.13'
-            toxenv: py313-test-pytestdev-numpydev
+            python-version: '3.14-dev'
+            toxenv: py314-test-pytestdev-numpydev
           - os: ubuntu-latest
             python-version: '3.13'
             toxenv: py313-test-pytest83-pytestasyncio
diff --git a/tests/test_doctestplus.py b/tests/test_doctestplus.py
index 57caf60..1cff957 100644
--- a/tests/test_doctestplus.py
+++ b/tests/test_doctestplus.py
@@ -769,6 +769,8 @@ def f():
     ).assertoutcome(passed=2)
 
 
+# We see unclosed file ResourceWarning on windows with python 3.14
+@pytest.mark.filterwarnings('ignore:unclosed file:ResourceWarning')
 def test_doctest_only(testdir, makepyfile, maketestfile, makerstfile):
     # regular python files with doctests
     makepyfile(p1='>>> 1 + 1\n2')
diff --git a/tox.ini b/tox.ini
index ade7ec9..8133d8b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{39,310,311,312,313}-test
+    py{39,310,311,312,313,314}-test
     codestyle
 requires =
     setuptools >= 30.3.0