diff --git a/tox.ini b/tox.ini
index b6b1b9c6c5..3139443ea9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -30,6 +30,9 @@ envlist =
     pypy3-test-instrumentation-botocore
 
     ; opentelemetry-instrumentation-django
+    ; Only officially supported Python versions are tested for each Django
+    ; major release. Updated list can be found at:
+    ; https://docs.djangoproject.com/en/dev/faq/install/#what-python-version-can-i-use-with-django
     py3{6,7}-test-instrumentation-django1
     py3{6,7,8,9}-test-instrumentation-django2
     py3{6,7,8,9,10}-test-instrumentation-django3