diff --git a/tox.ini b/tox.ini
index b7a5fc9..6ad28e8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -31,8 +31,8 @@ max-line-length = 120
 
 [gh-actions]
 python =
-    3.12 = py312, flake8
-    3.11 = py311
-    3.10 = py310
-    3.9 = py39
-    3.8 = py38
+    3.12: py312, flake8
+    3.11: py311
+    3.10: py310
+    3.9: py39
+    3.8: py38