diff --git a/docsfera.json b/docsfera.json
index 08320c6..d758028 100644
--- a/docsfera.json
+++ b/docsfera.json
@@ -11087,6 +11087,31 @@
             "docs"
           ]
         },
+        "CustomPropertyDto": {
+          "type": "object",
+          "properties": {
+            "key": {
+              "type": "string"
+            },
+            "value": {
+              "type": "string"
+            },
+            "type": {
+              "type": "string",
+              "enum": [
+                "text",
+                "number",
+                "date",
+                "boolean"
+              ]
+            }
+          },
+          "required": [
+            "key",
+            "value",
+            "type"
+          ]
+        },
         "IUpdateDataRequest": {
           "type": "object",
           "properties": {
@@ -11117,7 +11142,10 @@
               "type": "string"
             },
             "custom_properties": {
-              "type": "object"
+              "type": "array",
+              "items": {
+                "$ref": "#/components/schemas/CustomPropertyDto"
+              }
             }
           },
           "required": [
diff --git a/src/modules/catalog/dtos/index.ts b/src/modules/catalog/dtos/index.ts
index 00c641b..aa2ee07 100644
--- a/src/modules/catalog/dtos/index.ts
+++ b/src/modules/catalog/dtos/index.ts
@@ -204,6 +204,22 @@ export class IData {
 }
 
 
+export enum CustomPropertyType {
+  TEXT = 'text',
+  NUMBER = 'number',
+  DATE = 'date',
+  BOOLEAN = 'boolean',
+}
+
+export class CustomPropertyDto {
+  @ApiProperty()
+  key: string;
+  @ApiProperty()
+  value: string;
+  @ApiProperty({ enum: CustomPropertyType })
+  type: CustomPropertyType;
+}
+
 export class IUpdateDataRequest {
   @ApiProperty()
   name: string;
@@ -217,8 +233,8 @@ export class IUpdateDataRequest {
   share_type?: DataAssetShareType;
   @ApiPropertyOptional()
   docs?: string;
-  @ApiPropertyOptional()
-  custom_properties?: Record<string, (string | number | boolean)[]>;
+  @ApiPropertyOptional({ type: [CustomPropertyDto] })
+  custom_properties?: CustomPropertyDto[];
 }
 
 export class IUpdateCertificationStatusRequest {