diff --git a/models/schema.yml b/models/schema.yml
index 021cf8642..1ff03beae 100644
--- a/models/schema.yml
+++ b/models/schema.yml
@@ -34,6 +34,19 @@ models:
       - name: signup_date
         description: Date (UTC) of a customer's signup to the online shop.
 
+    tests:
+      - elementary.volume_anomalies:
+          time_bucket:
+            period: day
+            count: 1
+          sensitivity: 3
+          days_back: 14
+          backfill_days: 2
+          timestamp_column: signup_date
+          config:
+            severity: error
+          meta:
+            description: Checking for anomalies in the size and growth of a table by comparing the row count of each 1 days period to the last 14 days
   - name: orders
     description: This table has basic information about orders, as well as some derived facts based on payments
     config: