fix temporary errors

Author: shankarpandala

.travis.yml

@@ -3,10 +3,7 @@ os:
   - osx
   - windows
 
-dist:
-  - bionic
-  - focal
-  - Jammy
+dist: bionic
 
 jobs:
   allow_failures:
@@ -18,6 +15,9 @@ python:
 - 3.8
 - 3.9
 - 3.10
+- 3.11
+- 3.12
+- 3.13
 
 install: pip install -U tox-travis
 script: tox