diff --git a/README.rst b/README.rst
index 3ad3ab65f0202aaada81c3a850b6cb05f17c15d7..bc930d601ab327466f3f9cfa8066e6259589c695 100644
--- a/README.rst
+++ b/README.rst
@@ -143,7 +143,7 @@ PyPy.
 Release
 -------
 
-Release requires Pipenv_. To bump the version run
+Release requires Pipenv_ and Python 3.6 or later. To bump the version run
 :code:`pipenv run bumpversion major|minor|patch` to update the version and git
 commit and tag the changes, then run :code:`git push --follow-tags` to push the
 git commit and tag. The GitLab CI will then build and upload a release to PyPI.