diff --git a/doc/source/contributor/mailing-list.rst b/doc/source/contributor/mailing-list.rst
index 756aa66..a8616b0 100644
--- a/doc/source/contributor/mailing-list.rst
+++ b/doc/source/contributor/mailing-list.rst
@@ -7,9 +7,9 @@ Mailing lists
 The mailing lists are preferred, as it makes the information more readily available so that others who have the same question or issue can search for and find the answers.
 
 -  Dev discussions:
-   `openstack-dev@lists.openstack.org <http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev>`__
+   `openstack-dev@lists.openstack.org <https://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev>`__
    with ``[chef]`` tag.
 -  Usage discussions:
-   `openstack-operators@lists.openstack.org <http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators>`__
+   `openstack-operators@lists.openstack.org <https://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators>`__
    with ``[chef]`` tag.
 
diff --git a/doc/source/install/supported-platforms.rst b/doc/source/install/supported-platforms.rst
index 20f818f..15a9f42 100644
--- a/doc/source/install/supported-platforms.rst
+++ b/doc/source/install/supported-platforms.rst
@@ -12,5 +12,5 @@ the `Chef Development Kit <https://docs.chef.io/about_chefdk.html>`_.
 Your success rate may vary with the bleeding edge. Chef 12 and older is NOT
 supported.
 
-See `Chef CI <http://docs.openstack.org/openstack-chef/latest/contributor/ci.html>`_
+See `Chef CI <https://docs.openstack.org/openstack-chef/latest/contributor/ci.html>`_
 to see what is currently tested.