diff --git a/output/openapi/elasticsearch-openapi.json b/output/openapi/elasticsearch-openapi.json
index f2388739dd..3a0b437052 100644
--- a/output/openapi/elasticsearch-openapi.json
+++ b/output/openapi/elasticsearch-openapi.json
@@ -52738,7 +52738,9 @@
               }
             },
             "required": [
-              "retriever"
+              "retriever",
+              "inference_text",
+              "field"
             ]
           }
         ]
@@ -52835,10 +52837,7 @@
               "rank_window_size": {
                 "type": "number"
               }
-            },
-            "required": [
-              "rank_window_size"
-            ]
+            }
           }
         ]
       },
@@ -52896,8 +52895,7 @@
               }
             },
             "required": [
-              "retriever",
-              "rank_window_size"
+              "retriever"
             ]
           }
         ]
diff --git a/output/openapi/elasticsearch-serverless-openapi.json b/output/openapi/elasticsearch-serverless-openapi.json
index 37c0fd8063..5460ddae7c 100644
--- a/output/openapi/elasticsearch-serverless-openapi.json
+++ b/output/openapi/elasticsearch-serverless-openapi.json
@@ -31654,7 +31654,9 @@
               }
             },
             "required": [
-              "retriever"
+              "retriever",
+              "inference_text",
+              "field"
             ]
           }
         ]
@@ -31751,10 +31753,7 @@
               "rank_window_size": {
                 "type": "number"
               }
-            },
-            "required": [
-              "rank_window_size"
-            ]
+            }
           }
         ]
       },
@@ -31812,8 +31811,7 @@
               }
             },
             "required": [
-              "retriever",
-              "rank_window_size"
+              "retriever"
             ]
           }
         ]
diff --git a/output/schema/schema.json b/output/schema/schema.json
index 494697b5c3..387a707a19 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -52788,7 +52788,7 @@
         },
         {
           "name": "rank_window_size",
-          "required": true,
+          "required": false,
           "type": {
             "kind": "instance_of",
             "type": {
@@ -53811,7 +53811,7 @@
         },
         {
           "name": "rank_window_size",
-          "required": true,
+          "required": false,
           "type": {
             "kind": "instance_of",
             "type": {
@@ -56963,7 +56963,7 @@
         {
           "description": "The text snippet used as the basis for similarity comparison",
           "name": "inference_text",
-          "required": false,
+          "required": true,
           "type": {
             "kind": "instance_of",
             "type": {
@@ -56975,7 +56975,7 @@
         {
           "description": "The document field to be used for text similarity comparisons. This field should contain the text that will be evaluated against the inference_text",
           "name": "field",
-          "required": false,
+          "required": true,
           "type": {
             "kind": "instance_of",
             "type": {
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index b26dab0af2..bd353d2196 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -2539,7 +2539,7 @@ export type LifecycleOperationMode = 'RUNNING' | 'STOPPING' | 'STOPPED'
 
 export interface LinearRetriever extends RetrieverBase {
   retrievers?: InnerRetriever[]
-  rank_window_size: integer
+  rank_window_size?: integer
 }
 
 export type MapboxVectorTiles = ArrayBuffer
@@ -2634,7 +2634,7 @@ export interface PinnedRetriever extends RetrieverBase {
   retriever: RetrieverContainer
   ids?: string[]
   docs?: SpecifiedDocument[]
-  rank_window_size: integer
+  rank_window_size?: integer
 }
 
 export type PipelineName = string
@@ -2971,8 +2971,8 @@ export interface TextSimilarityReranker extends RetrieverBase {
   retriever: RetrieverContainer
   rank_window_size?: integer
   inference_id?: string
-  inference_text?: string
-  field?: string
+  inference_text: string
+  field: string
 }
 
 export type ThreadType = 'cpu' | 'wait' | 'block' | 'gpu' | 'mem'
diff --git a/specification/_types/Retriever.ts b/specification/_types/Retriever.ts
index 8511d22fa2..9be0329168 100644
--- a/specification/_types/Retriever.ts
+++ b/specification/_types/Retriever.ts
@@ -68,7 +68,7 @@ export class RescorerRetriever extends RetrieverBase {
 export class LinearRetriever extends RetrieverBase {
   /** Inner retrievers. */
   retrievers?: InnerRetriever[]
-  rank_window_size: integer
+  rank_window_size?: integer
 }
 
 export class PinnedRetriever extends RetrieverBase {
@@ -76,7 +76,7 @@ export class PinnedRetriever extends RetrieverBase {
   retriever: RetrieverContainer
   ids?: string[]
   docs?: SpecifiedDocument[]
-  rank_window_size: integer
+  rank_window_size?: integer
 }
 
 export class InnerRetriever {
@@ -145,9 +145,9 @@ export class TextSimilarityReranker extends RetrieverBase {
   /** Unique identifier of the inference endpoint created using the inference API. */
   inference_id?: string
   /** The text snippet used as the basis for similarity comparison */
-  inference_text?: string
+  inference_text: string
   /** The document field to be used for text similarity comparisons. This field should contain the text that will be evaluated against the inference_text */
-  field?: string
+  field: string
 }
 
 export class RuleRetriever extends RetrieverBase {