diff --git a/api/openapi.json b/api/openapi.json
index c9fff082..7a0c9042 100644
--- a/api/openapi.json
+++ b/api/openapi.json
@@ -3784,6 +3784,8 @@
       "type": "string"
      },
      "custom_payload_api_uri": {
+      "deprecated": true,
+      "description": "Experimental: This property is subject to change or removal in future versions",
       "type": "string"
      },
      "decimals": {
diff --git a/api/openapi.yml b/api/openapi.yml
index b62b93c2..63e2f187 100644
--- a/api/openapi.yml
+++ b/api/openapi.yml
@@ -5360,6 +5360,8 @@ components:
         verification:
           $ref: '#/components/schemas/JettonVerificationType'
         custom_payload_api_uri:  # todo: maybe remove
+          description: "Experimental: This property is subject to change or removal in future versions"
+          deprecated: true
           type: string
     JettonBalance:
       type: object
diff --git a/pkg/oas/oas_schemas_gen.go b/pkg/oas/oas_schemas_gen.go
index 40e00977..568467c7 100644
--- a/pkg/oas/oas_schemas_gen.go
+++ b/pkg/oas/oas_schemas_gen.go
@@ -7854,13 +7854,16 @@ func (s *JettonMintAction) SetJetton(val JettonPreview) {
 
 // Ref: #/components/schemas/JettonPreview
 type JettonPreview struct {
-	Address             string                 `json:"address"`
-	Name                string                 `json:"name"`
-	Symbol              string                 `json:"symbol"`
-	Decimals            int                    `json:"decimals"`
-	Image               string                 `json:"image"`
-	Verification        JettonVerificationType `json:"verification"`
-	CustomPayloadAPIURI OptString              `json:"custom_payload_api_uri"`
+	Address      string                 `json:"address"`
+	Name         string                 `json:"name"`
+	Symbol       string                 `json:"symbol"`
+	Decimals     int                    `json:"decimals"`
+	Image        string                 `json:"image"`
+	Verification JettonVerificationType `json:"verification"`
+	// Experimental: This property is subject to change or removal in future versions.
+	//
+	// Deprecated: schema marks this property as deprecated.
+	CustomPayloadAPIURI OptString `json:"custom_payload_api_uri"`
 }
 
 // GetAddress returns the value of Address.