diff --git a/src/main/resources/templates/db_scripts/migration/extract_credits_from_expenditures.sql b/src/main/resources/templates/db_scripts/migration/extract_credits_from_expenditures.sql
index 5a5cf588..4b18f8f0 100644
--- a/src/main/resources/templates/db_scripts/migration/extract_credits_from_expenditures.sql
+++ b/src/main/resources/templates/db_scripts/migration/extract_credits_from_expenditures.sql
@@ -40,11 +40,14 @@ WITH aggregated_amounts AS (
 )
 UPDATE ${myuniversity}_${mymodule}.transaction AS encumbrance
 SET
-    jsonb = jsonb || jsonb_build_object(
-        'encumbrance', jsonb_build_object(
-            'amountExpended', to_jsonb(aggregated_amounts.total_expended),
-            'amountCredited', to_jsonb(aggregated_amounts.total_credited)
-        )
+    jsonb = jsonb_set(
+        jsonb_set(
+            encumbrance.jsonb,
+            '{encumbrance,amountExpended}',
+            to_jsonb(aggregated_amounts.total_expended)
+        ),
+        '{encumbrance,amountCredited}',
+        to_jsonb(aggregated_amounts.total_credited)
     )
 FROM aggregated_amounts
 WHERE encumbrance.id = aggregated_amounts.encumbrance_id;