diff --git a/src/Typesense/Collection.ts b/src/Typesense/Collection.ts
index 79dcdcc1..80f36e14 100644
--- a/src/Typesense/Collection.ts
+++ b/src/Typesense/Collection.ts
@@ -39,6 +39,7 @@ export interface CollectionFieldSchema {
   stem?: boolean;
   num_dim?: number;
   store?: boolean;
+  range_index?: boolean;
   [t: string]: unknown;
 }