diff --git a/tests/requirements-test.txt b/tests/requirements-test.txt
index 19312d5d..2f44e79a 100644
--- a/tests/requirements-test.txt
+++ b/tests/requirements-test.txt
@@ -1,7 +1,8 @@
 # micro-language and markers are described here: https://www.python.org/dev/peps/pep-0496/
 pytest==8.1.1
 flake8==7.0.0
-sphinx==7.2.6
+sphinx<7.2 ; python_version < '3.9'
+sphinx==7.2.6; python_version >= '3.9'
 mcpl==1.6.2
 yapf==0.40.2
 requests==2.31.0