diff --git a/requirements-test.txt b/requirements-test.txt
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -8,4 +8,4 @@
 types-pytz
 types-pyyaml
 types-requests
-
+types-toml  # needed for mypy (on py>=39), toml being a dep. of pytest<7