diff --git a/src/api/file_score.yaml b/src/api/file_score.yaml
index 8aefeba..a2567dc 100644
--- a/src/api/file_score.yaml
+++ b/src/api/file_score.yaml
@@ -10,6 +10,10 @@ info:
         name: dataset_id
         description: "A unique identifier for the dataset"
         required: true
+      - type: string
+        name: normalization_id
+        description: "Which normalization was used"
+        required: true
       - type: string
         name: method_id
         description: "A unique identifier for the method"