diff --git a/ci/elixir.yml b/ci/elixir.yml
index 6c76f54..371ff24 100644
--- a/ci/elixir.yml
+++ b/ci/elixir.yml
@@ -1,3 +1,8 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
 name: Elixir CI
 
 on:
diff --git a/ci/msbuild.yml b/ci/msbuild.yml
index c50354e..a52ec35 100644
--- a/ci/msbuild.yml
+++ b/ci/msbuild.yml
@@ -1,3 +1,8 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
 name: MSBuild
 
 on:
diff --git a/ci/symfony.yml b/ci/symfony.yml
index d1ac71a..4b957e1 100644
--- a/ci/symfony.yml
+++ b/ci/symfony.yml
@@ -1,3 +1,8 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
 name: Symfony
 
 on: