diff --git a/nmdc_runtime/api/models/util.py b/nmdc_runtime/api/models/util.py
index c298560e..ee277c73 100644
--- a/nmdc_runtime/api/models/util.py
+++ b/nmdc_runtime/api/models/util.py
@@ -115,4 +115,5 @@ class PipelineFindResponse(BaseModel):
         "instrument_name",
         "alternative_identifiers",
     },
+    "functional_annotation_agg": {"was_generated_by"},
 }