diff --git a/output/schema/schema.json b/output/schema/schema.json
index b700c378b1..9566514cec 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -51467,26 +51467,11 @@
           "name": "include",
           "required": false,
           "type": {
-            "items": [
-              {
-                "kind": "instance_of",
-                "type": {
-                  "name": "string",
-                  "namespace": "_builtins"
-                }
-              },
-              {
-                "kind": "array_of",
-                "value": {
-                  "kind": "instance_of",
-                  "type": {
-                    "name": "string",
-                    "namespace": "_builtins"
-                  }
-                }
-              }
-            ],
-            "kind": "union_of"
+            "kind": "instance_of",
+            "type": {
+              "name": "TermsInclude",
+              "namespace": "_types.aggregations"
+            }
           }
         },
         {
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index 948f436e73..98c55e7b21 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -3861,7 +3861,7 @@ export interface AggregationsSignificantTextAggregation extends AggregationsBuck
   field?: Field
   filter_duplicate_text?: boolean
   gnd?: AggregationsGoogleNormalizedDistanceHeuristic
-  include?: string | string[]
+  include?: AggregationsTermsInclude
   jlh?: EmptyObject
   min_doc_count?: long
   mutual_information?: AggregationsMutualInformationHeuristic
diff --git a/specification/_types/aggregations/bucket.ts b/specification/_types/aggregations/bucket.ts
index 2b7c4f53c2..ef3e66a3fe 100644
--- a/specification/_types/aggregations/bucket.ts
+++ b/specification/_types/aggregations/bucket.ts
@@ -365,7 +365,7 @@ export class SignificantTextAggregation extends BucketAggregationBase {
   field?: Field
   filter_duplicate_text?: boolean
   gnd?: GoogleNormalizedDistanceHeuristic
-  include?: string | string[]
+  include?: TermsInclude
   jlh?: EmptyObject
   min_doc_count?: long
   mutual_information?: MutualInformationHeuristic