diff --git a/.appveyor.yml b/.appveyor.yml
index a00111a9c..e92eeb8de 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -145,5 +145,6 @@ deploy:
       APPVEYOR_REPO_TAG_NAME: /([0-9]|[1-9][0-9])(\.([0-9]|[1-9][0-9])){2}$/    # regex to match semver naming convention for stable full releases
 
 
-# official validator for ".appveyor.yml" config file: https://ci.appveyor.com/tools/validate-yaml
-# appveyor config documentation: https://www.appveyor.com/docs/build-configuration/
+# Announcements of build image updates: https://www.appveyor.com/updates/
+# Official validator for ".appveyor.yml" config file: https://ci.appveyor.com/tools/validate-yaml
+# AppVeyor config documentation: https://www.appveyor.com/docs/build-configuration/
diff --git a/.travis.yml b/.travis.yml
index 04f936978..fe9cc6dea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -99,5 +99,6 @@ notifications:
     on_error: change
 
 
-# official validator for ".travis.yml" config file: https://yaml.travis-ci.org
-# travis config documentation: https://docs.travis-ci.com/user/customizing-the-build
+# Announcements of build image updates: https://docs.travis-ci.com/user/build-environment-updates/
+# Official validator for ".travis.yml" config file: https://yaml.travis-ci.org
+# Travis CI config documentation: https://docs.travis-ci.com/user/customizing-the-build