diff --git a/doc/source/contributor/testing.rst b/doc/source/contributor/testing.rst
index 021d0ae76..4a1e1938b 100644
--- a/doc/source/contributor/testing.rst
+++ b/doc/source/contributor/testing.rst
@@ -8,11 +8,11 @@ test targets that can be run to validate the code.
 ``tox -e pep8``
   Style guidelines enforcement.
 
-``tox -e py37``
-  Traditional unit testing (Python 3.7).
+``tox -e py38``
+  Traditional unit testing (Python 3.8).
 
 ``tox -e functional``
-  Live functional testing against an existing OpenStack instance. (Python 3.7)
+  Live functional testing against an existing OpenStack instance. (Python 3.8)
 
 ``tox -e cover``
   Generate a coverage report on unit testing.