diff --git a/tests/yaml/valid/purchases.yaml b/tests/yaml/valid/purchases.yaml
index 78ce9ff..57ae6b3 100644
--- a/tests/yaml/valid/purchases.yaml
+++ b/tests/yaml/valid/purchases.yaml
@@ -28,6 +28,13 @@ metrics:
   numerator:
     fact_name: Purchase
     operation: distinct_entity
+- name: Guardrail metric
+  entity: User
+  is_guardrail: true
+  guardrail_cutoff: 0.03
+  numerator:
+    fact_name: Purchase
+    operation: distinct_entity
 - name: AOV
   entity: User
   numerator: