diff --git a/README.md b/README.md
index 2df56387..e48bf89f 100644
--- a/README.md
+++ b/README.md
@@ -293,3 +293,4 @@ about the client or APIs on [StackOverflow](http://stackoverflow.com).
 
 [application default credentials]: https://cloud.google.com/docs/authentication/provide-credentials-adc
 [license]: https://github.com/googleapis/google-auth-library-ruby/tree/main/LICENSE
+# Test comment to verify CI failures