diff --git a/charts/pgcat/values.yaml b/charts/pgcat/values.yaml
index 3f933ca..5b40420 100644
--- a/charts/pgcat/values.yaml
+++ b/charts/pgcat/values.yaml
@@ -1,3 +1,6 @@
+## Security PoC marker: a fork-origin PR touching this file triggers
+## .github/workflows/generate-chart-readme.yaml via pull_request_target.
+##
 ## String to partially override aspnet-core.fullname template (will maintain the release name)
 ## @param nameOverride String to partially override common.names.fullname
 ##