diff --git a/output/openapi/elasticsearch-serverless-openapi.json b/output/openapi/elasticsearch-serverless-openapi.json
index f91db3b761..a373dde850 100644
--- a/output/openapi/elasticsearch-serverless-openapi.json
+++ b/output/openapi/elasticsearch-serverless-openapi.json
@@ -1932,7 +1932,7 @@
                     "type": "string"
                   },
                   "index_name": {
-                    "$ref": "#/components/schemas/_spec_utils:WithNullValuestring"
+                    "$ref": "#/components/schemas/_spec_utils:WithNullValueIndexName"
                   },
                   "is_native": {
                     "type": "boolean"
@@ -2047,7 +2047,7 @@
                     "$ref": "#/components/schemas/_spec_utils:WithNullValuestring"
                   },
                   "last_access_control_sync_scheduled_at": {
-                    "type": "string"
+                    "$ref": "#/components/schemas/_types:DateTime"
                   },
                   "last_access_control_sync_status": {
                     "$ref": "#/components/schemas/connector._types:SyncStatus"
@@ -2056,25 +2056,25 @@
                     "type": "number"
                   },
                   "last_incremental_sync_scheduled_at": {
-                    "type": "string"
+                    "$ref": "#/components/schemas/_types:DateTime"
                   },
                   "last_indexed_document_count": {
                     "type": "number"
                   },
                   "last_seen": {
-                    "$ref": "#/components/schemas/_spec_utils:WithNullValuestring"
+                    "$ref": "#/components/schemas/_spec_utils:WithNullValueDateTime"
                   },
                   "last_sync_error": {
                     "$ref": "#/components/schemas/_spec_utils:WithNullValuestring"
                   },
                   "last_sync_scheduled_at": {
-                    "type": "string"
+                    "$ref": "#/components/schemas/_types:DateTime"
                   },
                   "last_sync_status": {
                     "$ref": "#/components/schemas/connector._types:SyncStatus"
                   },
                   "last_synced": {
-                    "type": "string"
+                    "$ref": "#/components/schemas/_types:DateTime"
                   }
                 }
               }
@@ -2225,7 +2225,7 @@
                     "type": "string"
                   },
                   "index_name": {
-                    "$ref": "#/components/schemas/_spec_utils:WithNullValuestring"
+                    "$ref": "#/components/schemas/_spec_utils:WithNullValueIndexName"
                   },
                   "is_native": {
                     "type": "boolean"
@@ -2563,7 +2563,7 @@
                 "type": "object",
                 "properties": {
                   "index_name": {
-                    "$ref": "#/components/schemas/_spec_utils:WithNullValuestring"
+                    "$ref": "#/components/schemas/_spec_utils:WithNullValueIndexName"
                   }
                 },
                 "required": [
@@ -49315,7 +49315,7 @@
             "$ref": "#/components/schemas/_types:Id"
           },
           "index_name": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:IndexName"
           },
           "is_native": {
             "type": "boolean"
@@ -49327,7 +49327,7 @@
             "type": "string"
           },
           "last_access_control_sync_scheduled_at": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "last_access_control_sync_status": {
             "$ref": "#/components/schemas/connector._types:SyncStatus"
@@ -49336,25 +49336,25 @@
             "type": "number"
           },
           "last_incremental_sync_scheduled_at": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "last_indexed_document_count": {
             "type": "number"
           },
           "last_seen": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "last_sync_error": {
             "type": "string"
           },
           "last_sync_scheduled_at": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "last_sync_status": {
             "$ref": "#/components/schemas/connector._types:SyncStatus"
           },
           "last_synced": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "name": {
             "type": "string"
@@ -49672,7 +49672,7 @@
             "type": "string"
           },
           "last_synced": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "name": {
             "type": "string"
@@ -49801,10 +49801,10 @@
         "type": "object",
         "properties": {
           "created_at": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "updated_at": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "value": {
             "type": "object",
@@ -49823,13 +49823,13 @@
         "type": "object",
         "properties": {
           "created_at": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "field": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:Field"
           },
           "id": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:Id"
           },
           "order": {
             "type": "number"
@@ -49841,7 +49841,7 @@
             "$ref": "#/components/schemas/connector._types:FilteringRuleRule"
           },
           "updated_at": {
-            "type": "string"
+            "$ref": "#/components/schemas/_types:DateTime"
           },
           "value": {
             "type": "string"
@@ -49901,7 +49901,7 @@
           "ids": {
             "type": "array",
             "items": {
-              "type": "string"
+              "$ref": "#/components/schemas/_types:Id"
             }
           },
           "messages": {
@@ -50015,6 +50015,28 @@
         "description": "A `null` value that is to be interpreted as an actual value, unless other uses of `null` that are equivalent\nto a missing value. It is used for exemple in settings, where using the `NullValue` for a setting will reset\nit to its default value.",
         "type": "string"
       },
+      "_spec_utils:WithNullValueDateTime": {
+        "description": "`WithNullValue<T>` allows for explicit null assignments in contexts where `null` should be interpreted as an\nactual value.",
+        "oneOf": [
+          {
+            "$ref": "#/components/schemas/_types:DateTime"
+          },
+          {
+            "$ref": "#/components/schemas/_spec_utils:NullValue"
+          }
+        ]
+      },
+      "_spec_utils:WithNullValueIndexName": {
+        "description": "`WithNullValue<T>` allows for explicit null assignments in contexts where `null` should be interpreted as an\nactual value.",
+        "oneOf": [
+          {
+            "$ref": "#/components/schemas/_types:IndexName"
+          },
+          {
+            "$ref": "#/components/schemas/_spec_utils:NullValue"
+          }
+        ]
+      },
       "_types:WriteResponseBase": {
         "type": "object",
         "properties": {
diff --git a/output/schema/schema.json b/output/schema/schema.json
index a281f27f8a..77baf17a59 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -105792,8 +105792,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "IndexName",
+              "namespace": "_types"
             }
           }
         },
@@ -105836,8 +105836,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -105869,8 +105869,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -105891,8 +105891,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -105913,8 +105913,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -105935,8 +105935,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -106007,7 +106007,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L237-L266"
+      "specLocation": "connector/_types/Connector.ts#L238-L267"
     },
     {
       "kind": "interface",
@@ -106194,7 +106194,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L82-L98"
+      "specLocation": "connector/_types/Connector.ts#L83-L99"
     },
     {
       "kind": "type_alias",
@@ -106202,7 +106202,7 @@
         "name": "ConnectorConfiguration",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L100-L103",
+      "specLocation": "connector/_types/Connector.ts#L101-L104",
       "type": {
         "key": {
           "kind": "instance_of",
@@ -106228,7 +106228,7 @@
         "name": "ConnectorCustomScheduling",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L127-L127",
+      "specLocation": "connector/_types/Connector.ts#L128-L128",
       "type": {
         "key": {
           "kind": "instance_of",
@@ -106311,7 +106311,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L223-L229"
+      "specLocation": "connector/_types/Connector.ts#L224-L230"
     },
     {
       "kind": "enum",
@@ -106333,7 +106333,7 @@
         "name": "ConnectorFieldType",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L42-L47"
+      "specLocation": "connector/_types/Connector.ts#L43-L48"
     },
     {
       "kind": "interface",
@@ -106366,7 +106366,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L105-L109"
+      "specLocation": "connector/_types/Connector.ts#L106-L110"
     },
     {
       "kind": "enum",
@@ -106391,7 +106391,7 @@
         "name": "ConnectorStatus",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L129-L135"
+      "specLocation": "connector/_types/Connector.ts#L130-L136"
     },
     {
       "kind": "interface",
@@ -106439,8 +106439,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -106456,7 +106456,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L119-L125"
+      "specLocation": "connector/_types/Connector.ts#L120-L126"
     },
     {
       "kind": "interface",
@@ -106530,7 +106530,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L111-L117"
+      "specLocation": "connector/_types/Connector.ts#L112-L118"
     },
     {
       "kind": "interface",
@@ -106562,7 +106562,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L29-L32"
+      "specLocation": "connector/_types/Connector.ts#L30-L33"
     },
     {
       "kind": "enum",
@@ -106587,7 +106587,7 @@
         "name": "DisplayType",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L34-L40"
+      "specLocation": "connector/_types/Connector.ts#L35-L41"
     },
     {
       "kind": "interface",
@@ -106608,7 +106608,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L214-L216"
+      "specLocation": "connector/_types/Connector.ts#L215-L217"
     },
     {
       "kind": "interface",
@@ -106623,8 +106623,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -106634,8 +106634,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -106658,7 +106658,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L191-L195"
+      "specLocation": "connector/_types/Connector.ts#L192-L196"
     },
     {
       "kind": "interface",
@@ -106701,7 +106701,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L208-L212"
+      "specLocation": "connector/_types/Connector.ts#L209-L213"
     },
     {
       "kind": "enum",
@@ -106717,7 +106717,7 @@
         "name": "FilteringPolicy",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L154-L157"
+      "specLocation": "connector/_types/Connector.ts#L155-L158"
     },
     {
       "kind": "interface",
@@ -106732,8 +106732,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -106743,8 +106743,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "Field",
+              "namespace": "_types"
             }
           }
         },
@@ -106754,8 +106754,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "Id",
+              "namespace": "_types"
             }
           }
         },
@@ -106798,8 +106798,8 @@
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "string",
-              "namespace": "_builtins"
+              "name": "DateTime",
+              "namespace": "_types"
             }
           }
         },
@@ -106815,7 +106815,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L169-L178"
+      "specLocation": "connector/_types/Connector.ts#L170-L179"
     },
     {
       "kind": "enum",
@@ -106848,7 +106848,7 @@
         "name": "FilteringRuleRule",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L159-L167"
+      "specLocation": "connector/_types/Connector.ts#L160-L168"
     },
     {
       "kind": "interface",
@@ -106894,7 +106894,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L202-L206"
+      "specLocation": "connector/_types/Connector.ts#L203-L207"
     },
     {
       "kind": "interface",
@@ -106929,7 +106929,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L197-L200"
+      "specLocation": "connector/_types/Connector.ts#L198-L201"
     },
     {
       "kind": "interface",
@@ -106946,8 +106946,8 @@
             "value": {
               "kind": "instance_of",
               "type": {
-                "name": "string",
-                "namespace": "_builtins"
+                "name": "Id",
+                "namespace": "_types"
               }
             }
           }
@@ -106967,7 +106967,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L180-L183"
+      "specLocation": "connector/_types/Connector.ts#L181-L184"
     },
     {
       "kind": "enum",
@@ -106986,7 +106986,7 @@
         "name": "FilteringValidationState",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L185-L189"
+      "specLocation": "connector/_types/Connector.ts#L186-L190"
     },
     {
       "kind": "interface",
@@ -107015,7 +107015,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L62-L65"
+      "specLocation": "connector/_types/Connector.ts#L63-L66"
     },
     {
       "kind": "interface",
@@ -107044,7 +107044,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L72-L75"
+      "specLocation": "connector/_types/Connector.ts#L73-L76"
     },
     {
       "kind": "interface",
@@ -107098,7 +107098,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L147-L152"
+      "specLocation": "connector/_types/Connector.ts#L148-L153"
     },
     {
       "kind": "interface",
@@ -107127,7 +107127,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L57-L60"
+      "specLocation": "connector/_types/Connector.ts#L58-L61"
     },
     {
       "kind": "interface",
@@ -107159,7 +107159,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L67-L70"
+      "specLocation": "connector/_types/Connector.ts#L68-L71"
     },
     {
       "kind": "interface",
@@ -107188,7 +107188,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L77-L80"
+      "specLocation": "connector/_types/Connector.ts#L78-L81"
     },
     {
       "kind": "interface",
@@ -107231,7 +107231,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L231-L235"
+      "specLocation": "connector/_types/Connector.ts#L232-L236"
     },
     {
       "kind": "interface",
@@ -107263,7 +107263,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L24-L27"
+      "specLocation": "connector/_types/Connector.ts#L25-L28"
     },
     {
       "kind": "interface",
@@ -107295,7 +107295,7 @@
           }
         }
       ],
-      "specLocation": "connector/_types/Connector.ts#L218-L221"
+      "specLocation": "connector/_types/Connector.ts#L219-L222"
     },
     {
       "kind": "enum",
@@ -107326,7 +107326,7 @@
         "name": "SyncStatus",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L137-L145"
+      "specLocation": "connector/_types/Connector.ts#L138-L146"
     },
     {
       "kind": "type_alias",
@@ -107334,7 +107334,7 @@
         "name": "Validation",
         "namespace": "connector._types"
       },
-      "specLocation": "connector/_types/Connector.ts#L49-L55",
+      "specLocation": "connector/_types/Connector.ts#L50-L56",
       "type": {
         "items": [
           {
@@ -107581,8 +107581,8 @@
             "type": {
               "kind": "instance_of",
               "type": {
-                "name": "string",
-                "namespace": "_builtins"
+                "name": "DateTime",
+                "namespace": "_types"
               }
             }
           },
@@ -107614,8 +107614,8 @@
             "type": {
               "kind": "instance_of",
               "type": {
-                "name": "string",
-                "namespace": "_builtins"
+                "name": "DateTime",
+                "namespace": "_types"
               }
             }
           },
@@ -107638,8 +107638,8 @@
                 {
                   "kind": "instance_of",
                   "type": {
-                    "name": "string",
-                    "namespace": "_builtins"
+                    "name": "DateTime",
+                    "namespace": "_types"
                   }
                 }
               ],
@@ -107676,8 +107676,8 @@
             "type": {
               "kind": "instance_of",
               "type": {
-                "name": "string",
-                "namespace": "_builtins"
+                "name": "DateTime",
+                "namespace": "_types"
               }
             }
           },
@@ -107698,8 +107698,8 @@
             "type": {
               "kind": "instance_of",
               "type": {
-                "name": "string",
-                "namespace": "_builtins"
+                "name": "DateTime",
+                "namespace": "_types"
               }
             }
           }
@@ -107732,7 +107732,7 @@
         }
       ],
       "query": [],
-      "specLocation": "connector/last_sync/ConnectorUpdateLastSyncRequest.ts#L25-L55"
+      "specLocation": "connector/last_sync/ConnectorUpdateLastSyncRequest.ts#L26-L56"
     },
     {
       "body": {
@@ -107918,8 +107918,8 @@
                 {
                   "kind": "instance_of",
                   "type": {
-                    "name": "string",
-                    "namespace": "_builtins"
+                    "name": "IndexName",
+                    "namespace": "_types"
                   }
                 }
               ],
@@ -107990,7 +107990,7 @@
       },
       "path": [],
       "query": [],
-      "specLocation": "connector/post/ConnectorPostRequest.ts#L22-L42"
+      "specLocation": "connector/post/ConnectorPostRequest.ts#L23-L43"
     },
     {
       "body": {
@@ -108042,8 +108042,8 @@
                 {
                   "kind": "instance_of",
                   "type": {
-                    "name": "string",
-                    "namespace": "_builtins"
+                    "name": "IndexName",
+                    "namespace": "_types"
                   }
                 }
               ],
@@ -108519,8 +108519,8 @@
                 {
                   "kind": "instance_of",
                   "type": {
-                    "name": "string",
-                    "namespace": "_builtins"
+                    "name": "IndexName",
+                    "namespace": "_types"
                   }
                 }
               ],
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index 09b985b667..bb907d07b7 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -9091,20 +9091,20 @@ export interface ConnectorConnector {
   features: ConnectorConnectorFeatures
   filtering: ConnectorFilteringConfig[]
   id?: Id
-  index_name?: string
+  index_name?: IndexName
   is_native: boolean
   language?: string
   last_access_control_sync_error?: string
-  last_access_control_sync_scheduled_at?: string
+  last_access_control_sync_scheduled_at?: DateTime
   last_access_control_sync_status?: ConnectorSyncStatus
   last_deleted_document_count?: long
-  last_incremental_sync_scheduled_at?: string
+  last_incremental_sync_scheduled_at?: DateTime
   last_indexed_document_count?: long
-  last_seen?: string
+  last_seen?: DateTime
   last_sync_error?: string
-  last_sync_scheduled_at?: string
+  last_sync_scheduled_at?: DateTime
   last_sync_status?: ConnectorSyncStatus
-  last_synced?: string
+  last_synced?: DateTime
   name?: string
   pipeline?: ConnectorIngestPipelineParams
   scheduling: ConnectorSchedulingConfiguration
@@ -9156,7 +9156,7 @@ export interface ConnectorCustomScheduling {
   configuration_overrides: ConnectorCustomSchedulingConfigurationOverrides
   enabled: boolean
   interval: string
-  last_synced?: string
+  last_synced?: DateTime
   name: string
 }
 
@@ -9180,8 +9180,8 @@ export interface ConnectorFeatureEnabled {
 }
 
 export interface ConnectorFilteringAdvancedSnippet {
-  created_at: string
-  updated_at: string
+  created_at: DateTime
+  updated_at: DateTime
   value: Record<string, any>
 }
 
@@ -9194,13 +9194,13 @@ export interface ConnectorFilteringConfig {
 export type ConnectorFilteringPolicy = 'exclude' | 'include'
 
 export interface ConnectorFilteringRule {
-  created_at: string
-  field: string
-  id: string
+  created_at: DateTime
+  field: Field
+  id: Id
   order: integer
   policy: ConnectorFilteringPolicy
   rule: ConnectorFilteringRuleRule
-  updated_at: string
+  updated_at: DateTime
   value: string
 }
 
@@ -9218,7 +9218,7 @@ export interface ConnectorFilteringRulesValidation {
 }
 
 export interface ConnectorFilteringValidation {
-  ids: string[]
+  ids: Id[]
   messages: string[]
 }
 
@@ -9300,16 +9300,16 @@ export interface ConnectorLastSyncRequest extends RequestBase {
   connector_id: Id
   body?: {
     last_access_control_sync_error?: SpecUtilsWithNullValue<string>
-    last_access_control_sync_scheduled_at?: string
+    last_access_control_sync_scheduled_at?: DateTime
     last_access_control_sync_status?: ConnectorSyncStatus
     last_deleted_document_count?: long
-    last_incremental_sync_scheduled_at?: string
+    last_incremental_sync_scheduled_at?: DateTime
     last_indexed_document_count?: long
-    last_seen?: SpecUtilsWithNullValue<string>
+    last_seen?: SpecUtilsWithNullValue<DateTime>
     last_sync_error?: SpecUtilsWithNullValue<string>
-    last_sync_scheduled_at?: string
+    last_sync_scheduled_at?: DateTime
     last_sync_status?: ConnectorSyncStatus
-    last_synced?: string
+    last_synced?: DateTime
   }
 }
 
@@ -9334,7 +9334,7 @@ export interface ConnectorListResponse {
 export interface ConnectorPostRequest extends RequestBase {
   body?: {
     description?: string
-    index_name: SpecUtilsWithNullValue<string>
+    index_name: SpecUtilsWithNullValue<IndexName>
     is_native?: boolean
     language?: string
     name?: string
@@ -9350,7 +9350,7 @@ export interface ConnectorPutRequest extends RequestBase {
   connector_id: Id
   body?: {
     description?: string
-    index_name: SpecUtilsWithNullValue<string>
+    index_name: SpecUtilsWithNullValue<IndexName>
     is_native?: boolean
     language?: string
     name?: string
@@ -9411,7 +9411,7 @@ export interface ConnectorUpdateFilteringResponse {
 export interface ConnectorUpdateIndexNameRequest extends RequestBase {
   connector_id: Id
   body?: {
-    index_name: SpecUtilsWithNullValue<string>
+    index_name: SpecUtilsWithNullValue<IndexName>
   }
 }