diff --git a/README.md b/README.md
index 51dffa86..5259d02a 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,9 @@
 
 GitHub CLI is the command line tool of GitHub ([see the manual](https://cli.github.com/manual/)).
 
-This action sets up GitHub CLI tool. It downloads GitHub CLI binaries from https://github.com/cli/cli/releases and adds path to PATH
+This action sets up GitHub CLI tool. It downloads GitHub CLI binaries from https://github.com/cli/cli/releases and adds path to PATH.
+
+If you're using GitHub-hosted runners in your workflow, you probably don't need this (see "Included Software" on https://github.com/actions/runner-images), unless you want to downgrade/pin the version.
 
 # Usage