diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ce97596..c5e1906 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -36,6 +36,8 @@ jobs:
           min-deps: '--force-dep pytest==6.2.4'
         - python: '3.14'
           min-deps: '--force-dep pytest==7.3.2'
+        - python: '3.15'
+          min-deps: '--force-dep pytest==7.3.2'
         - python: 'pypy-3.7'
           min-deps: '--force-dep pytest==4.6'
           os: 'ubuntu-22.04'
@@ -43,6 +45,12 @@ jobs:
           min-deps: '--force-dep pytest==4.6'
         - python: 'pypy-3.9'
           min-deps: '--force-dep pytest==4.6'
+        - python: 'pypy-3.10'
+          min-deps: '--force-dep pytest==6.2.4'
+        - python: 'pypy-3.11'
+          min-deps: '--force-dep pytest==6.2.4'
+        - python: 'pypy-3.12'
+          min-deps: '--force-dep pytest==6.2.4'
       fail-fast: false
 
     steps:
diff --git a/setup.py b/setup.py
index 577716d..9a91bb1 100644
--- a/setup.py
+++ b/setup.py
@@ -48,6 +48,7 @@ def read(fname):
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
         "Programming Language :: Python :: 3.14",
+        "Programming Language :: Python :: 3.15",
         "Topic :: Software Development :: Testing",
     ],
 )
diff --git a/tox.ini b/tox.ini
index ac3ac9b..77f8a03 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py{37,38,39,310,311,312,313,314,py3}{,-smtp},lint
+envlist = py{37,38,39,310,311,312,313,314,315,py3}{,-smtp},lint
 recreate = True
 isolated_build = True