diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 87a41ac..a2df41c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -28,6 +28,7 @@ jobs:
           - "3.9"
           - "3.10"
           - "3.11"
+          - "3.12"
         twisted:
           - "22.4.0"
           - "22.10.0"
diff --git a/test/test_bley.py b/test/test_bley.py
index 8005a75..d85c1d9 100644
--- a/test/test_bley.py
+++ b/test/test_bley.py
@@ -74,7 +74,7 @@ def _assert_defer_action(self, data):
 
     def _assert_prepend_action(self, data):
         self.assertEquals(data['action'], b"action=PREPEND")
-        self.assertRegexpMatches(data['text'].decode('ascii'), r"X-Greylist: delayed .* seconds by bley-.* at .*; .*")
+        self.assertRegex(data['text'].decode('ascii'), r"X-Greylist: delayed .* seconds by bley-.* at .*; .*")
 
     def test_incomplete_request(self):
         data = {
diff --git a/tox.ini b/tox.ini
index aaaf978..c9ff1f0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py36, py37, py38, py39, py310, py311
+envlist = py36, py37, py38, py39, py310, py311, py312
 
 [testenv]
 commands = make test
@@ -29,3 +29,4 @@ python =
   3.9: py39
   3.10: py310
   3.11: py311
+  3.12: py312