diff --git a/tox.ini b/tox.ini
index c9749972..9f51b6cc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{312, 311, 310}
+    py{3.12, 3.11, 3.10}
     build
 
 [testenv]
@@ -10,7 +10,7 @@ pip_pre = true
 extras = test
 depends =
     # build the package after testing
-    build: py{312, 311, 310}
+    build: py{3.12, 3.11, 3.10}
 commands = pytest --cov=zepben.ewb --cov-report=xml --cov-branch {posargs}
 
 [testenv:build]