diff --git a/apps/cases/serializers.py b/apps/cases/serializers.py
index f9045e103c38b267f241daa5143e8925eb6762d0..696ad8d2cdcdd911ae389e9dd1c65e2be3723df7 100644
--- a/apps/cases/serializers.py
+++ b/apps/cases/serializers.py
@@ -66,7 +66,8 @@ class InvestigationCaseSummarySerializer(serializers.ModelSerializer):
             "author",
             "created_at",
         ]
-        depth = 1
+
+        depth = 2
 
 
 class InvestigationCaseSerializer(serializers.ModelSerializer):