diff --git a/chapter5/models/schema.yml b/chapter5/models/schema.yml
index d229767..f20dab9 100644
--- a/chapter5/models/schema.yml
+++ b/chapter5/models/schema.yml
@@ -32,4 +32,7 @@ models:
       - name: cohort
         description: "The cohort of the adid. Theree are only 6 cohorts, each named either 'one', 'two', 'three', 'four', 'five', or 'six'. This value is required. Each cohort should have a maximum of 110 distinct adids." 
         tests:
-          - not_null
\ No newline at end of file
+          - not_null
+          - accepted_values:
+            values: ['one', 'two', 'three', 'four', 'five', 'six']
+          - ensure_cohort_size_max_110
\ No newline at end of file