diff --git a/rebuild-circleci-yaml b/rebuild-circleci-yaml
index 1e7694e..2d8a17d 100755
--- a/rebuild-circleci-yaml
+++ b/rebuild-circleci-yaml
@@ -59,6 +59,8 @@ py_version_map = {
     "py39": "3.9",
     "py310": "3.10",
     "py311": "3.11",
+    "py312": "3.12",
+    "py313": "3.13",
     "pypy3": "pypy3",
 }
 
diff --git a/tox.ini b/tox.ini
index f109b95..f8f161b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,15 +1,17 @@
 [tox]
 # NOTE: when adding Python versions, also update and re-run `./rebuild-circleci-yaml`
-envlist=pypy3-{nose,nose2,pytest3,unit,unit2},py{37,38,39}-{nose,nose2,pytest3,unit,unit2},py{310,311}-{unit,nose2}
+envlist=pypy3-{nose,nose2,pytest3,unit,unit2},py{37,38,39}-{nose,nose2,pytest3,unit,unit2},py{310,311,312,313}-{unit,nose2,pytest}
 
 [testenv]
 deps=
     nose
     mock
     nose2: nose2
+    pytest: pytest
     pytest2: pytest>=2,<3
     pytest3: pytest>=3,<4
     #pytest4: pytest>=4,<5
+    pytest8: pytest>=8,<9
     unit2: unittest2
 commands=
     nose: nosetests
@@ -17,5 +19,7 @@ commands=
     pytest2: py.test parameterized/test.py
     pytest3: py.test parameterized/test.py
     #pytest4: py.test parameterized/test.py
+    pytest: pytest parameterized/test.py
+    pytest8: pytest parameterized/test.py
     unit: python -m unittest parameterized.test
-    unit2: unit2 parameterized.test
\ No newline at end of file
+    unit2: unit2 parameterized.test