diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 2f73de1..122baa3 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -90,14 +90,14 @@ Submitting a change
 
 To submit a change to this repository, please follow the steps in this page:
 
-   http://docs.openstack.org/infra/manual/developers.html
+   https://docs.openstack.org/infra/manual/developers.html
 
 If you already have a good understanding of how the system works and your
 OpenStack accounts are set up, you can skip to the development workflow
 section of this documentation to learn how changes to OpenStack should be
 submitted for review via the Gerrit tool:
 
-   http://docs.openstack.org/infra/manual/developers.html#development-workflow
+   https://docs.openstack.org/infra/manual/developers.html#development-workflow
 
 Pull requests submitted through GitHub will be ignored.
 
@@ -119,5 +119,5 @@ Review on Gerrit
 ----------------
 
 We would like to have more people to help on
-`review patches <http://review.openstack.org/#/q/status:open+project:openstack/auto-scaling-sig>`_
+`review patches <https://review.openstack.org/#/q/status:open+project:openstack/auto-scaling-sig>`_
 so we can make sure the quality of it and confirm that whatever we put in is helpful.
diff --git a/README.rst b/README.rst
index 6a40a13..d81b4db 100644
--- a/README.rst
+++ b/README.rst
@@ -8,7 +8,7 @@ the initiatives of OpenStack's auto-scaling SIG.
 The documentation in this repository is automatically published
 online in HTML format:
 
-- http://docs.openstack.org/auto-scaling-sig/latest/
+- https://docs.openstack.org/auto-scaling-sig/latest/
 
 License
 -------
diff --git a/doc/source/index.rst b/doc/source/index.rst
index dbef1bc..78d4bbc 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -29,7 +29,7 @@ Links for Auto-scaling SIG
 
 * `StoryBoard <https://storyboard.openstack.org/#!/project/openstack/auto-scaling-sig>`_
 * `Repository <https://opendev.org/openstack/auto-scaling-sig>`_
-* `Gerrit <http://review.openstack.org/#/q/status:open+project:openstack/auto-scaling-sig>`_
+* `Gerrit <https://review.openstack.org/#/q/status:open+project:openstack/auto-scaling-sig>`_
 * `Meeting <http://eavesdrop.openstack.org/#Auto-scaling_SIG_Meeting>`_
 * IRC: #openstack-auto-scaling-sig