diff --git a/docs/development.rst b/docs/development.rst
index 5013913dff8082fcae4518e4d5347fd8d58ec1d5..fad800054b5cee9f54a822a52337c67b0d27151c 100644
--- a/docs/development.rst
+++ b/docs/development.rst
@@ -72,6 +72,20 @@ performing the following steps:
      workon majic-ansible-roles
      pip-sync
 
+8. Patch the installed version of test runner (Molecule) for
+   compatibility with newer versions of Vagrant (bundled Ruby):
+
+   .. note::
+      This is an unfortunate consequence of *Majic Ansible Roles*
+      being dependent on an old/deprecated version of Ansible. This
+      will be addressed at some point in the future when the roles are
+      moved over to being compatible with latest (and supported)
+      versions of Ansible.
+
+   ::
+
+      sed -i -e 's/ Hash\[/ **Hash[/' ~/.virtualenvs/majic-ansible-roles/lib/python3.9/site-packages/molecule/provisioner/ansible/plugins/libraries/molecule_vagrant.py
+
 
 Development conventions
 -----------------------