diff --git a/.github/workflows/code_quality.yml b/.github/workflows/code_quality.yml
index de80de1..916e743 100644
--- a/.github/workflows/code_quality.yml
+++ b/.github/workflows/code_quality.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
     uses: OpenJobDescription/.github/.github/workflows/reusable_python_build.yml@mainline
     with:
       os: ${{ matrix.os }}
diff --git a/hatch.toml b/hatch.toml
index 6227e8a..372974a 100644
--- a/hatch.toml
+++ b/hatch.toml
@@ -21,7 +21,7 @@ lint = [
 ]
 
 [[envs.all.matrix]]
-python = ["3.9", "3.10", "3.11"]
+python = ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
 [envs.release]
 detached = true
diff --git a/pyproject.toml b/pyproject.toml
index 537eae9..545c23a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,6 +21,8 @@ classifiers = [
   "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 :: POSIX :: Linux",
   "Operating System :: Microsoft :: Windows",
   "Operating System :: MacOS",
@@ -88,7 +90,6 @@ disallow_incomplete_defs = false
 disallow_untyped_calls = false
 show_error_context = true
 strict_equality = false
-python_version = 3.9
 warn_redundant_casts = true
 warn_unused_configs = true
 warn_unused_ignores = false
diff --git a/requirements-testing.txt b/requirements-testing.txt
index a2c5cb1..fed97f7 100644
--- a/requirements-testing.txt
+++ b/requirements-testing.txt
@@ -1,6 +1,7 @@
 coverage[toml] == 7.*
 coverage-conditional-plugin == 0.9.0
-pytest == 8.4.*
+pytest == 9.0.*; python_version >= '3.10'
+pytest == 8.4.*; python_version < '3.10'
 pytest-cov == 7.0.*
 pytest-timeout == 2.4.*
 pytest-xdist == 3.8.*