diff --git a/lib/documents/schemas/ai_assurance_portfolio_techniques.json b/lib/documents/schemas/ai_assurance_portfolio_techniques.json
index 49825da4b..9ba516d6e 100644
--- a/lib/documents/schemas/ai_assurance_portfolio_techniques.json
+++ b/lib/documents/schemas/ai_assurance_portfolio_techniques.json
@@ -17,6 +17,9 @@
     "1405edcb-943d-42d2-8ec8-c51cd58335a5",
     "c352c234-8083-47ec-8a4b-0edd45c31263"
   ],
+  "related": [
+    "4519b26b-6312-4855-bc45-828123bd8a2f"
+  ],
   "document_noun": "case study",
   "facets": [
     {