diff --git a/internal/builtins/cis/M-500_default_namespace.yaml b/internal/builtins/cis/M-500_default_namespace.yaml
index 72115e8..eab02af 100644
--- a/internal/builtins/cis/M-500_default_namespace.yaml
+++ b/internal/builtins/cis/M-500_default_namespace.yaml
@@ -14,6 +14,7 @@
 
 
 id: M-500
+slug: workload-in-default-namespace
 severity: Medium
 message: "Workload in default namespace"
 match: