diff --git a/tox.ini b/tox.ini
index b6279adc47c6cc60dffc22a6530d30d50fcd8907..d05a97cb91b86221594492e0b047e2f2eb972178 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py39,py311
+envlist = py311
 
 [flake8]
 exclude = venv,.tox,compendium-frontend,survey-frontend