diff --git a/src/schemas/ots-types.yaml b/src/schemas/ots-types.yaml
index 8ce9c7c7e..0e0aee180 100644
--- a/src/schemas/ots-types.yaml
+++ b/src/schemas/ots-types.yaml
@@ -429,3 +429,6 @@ TraceEntry:
     input:
       title: calldata of the operation
       $ref: '#/components/schemas/bytes'
+    output:
+      title: return data of the operation
+      $ref: '#/components/schemas/bytes'