diff --git a/roles/wsgi_website/molecule/default/playbook.yml b/roles/wsgi_website/molecule/default/playbook.yml
index 8a81844fdda1250c2d8a1696fc3d8847f4546406..8773c81470270e67a72342f17e199e8c129e11eb 100644
--- a/roles/wsgi_website/molecule/default/playbook.yml
+++ b/roles/wsgi_website/molecule/default/playbook.yml
@@ -52,9 +52,17 @@
       uid: 5001
       use_paste: false
       virtualenv_packages:
-        - dnspython==1.15.0,<1.20.0
+        # Main packages.
+        - dnspython==1.15.0
         - ptpython==0.41
         - prompt-toolkit==1.0.15
+        # Dependencies.
+        - docopt==0.6.2
+        - jedi==0.13.1
+        - parso==0.3.1
+        - Pygments==2.2.0
+        - six==1.11.0
+        - wcwidth==0.1.7
       website_mail_recipients: user
       wsgi_application: testapp:application
       wsgi_requirements: []