diff --git a/specification/_types/aggregations/bucket.ts b/specification/_types/aggregations/bucket.ts
index 7620f736f0..5bbee52d65 100644
--- a/specification/_types/aggregations/bucket.ts
+++ b/specification/_types/aggregations/bucket.ts
@@ -695,7 +695,7 @@ export class AggregationRange {
   /**
    * Start of the range (inclusive).
    */
-  from?: double | null
+  from?: FieldValue
   /**
    * Custom key to return the range with.
    */
@@ -703,7 +703,7 @@ export class AggregationRange {
   /**
    * End of the range (exclusive).
    */
-  to?: double | null
+  to?: FieldValue
 }
 
 /**