diff --git a/src/modules/cards/domain/value-objects/UrlMetadata.ts b/src/modules/cards/domain/value-objects/UrlMetadata.ts
index c0d04dcf..b8f0f7c2 100644
--- a/src/modules/cards/domain/value-objects/UrlMetadata.ts
+++ b/src/modules/cards/domain/value-objects/UrlMetadata.ts
@@ -12,6 +12,8 @@ export interface UrlMetadataProps {
   imageUrl?: string;
   type?: UrlType;
   retrievedAt?: Date;
+  doi?: string;
+  isbn?: string;
 }
 
 export class UrlMetadata extends ValueObject<UrlMetadataProps> {
@@ -51,6 +53,14 @@ export class UrlMetadata extends ValueObject<UrlMetadataProps> {
     return this.props.retrievedAt;
   }
 
+  get doi(): string | undefined {
+    return this.props.doi;
+  }
+
+  get isbn(): string | undefined {
+    return this.props.isbn;
+  }
+
   private constructor(props: UrlMetadataProps) {
     super(props);
   }
diff --git a/src/modules/cards/infrastructure/CitoidMetadataService.ts b/src/modules/cards/infrastructure/CitoidMetadataService.ts
index 9aeec43a..8b8032e1 100644
--- a/src/modules/cards/infrastructure/CitoidMetadataService.ts
+++ b/src/modules/cards/infrastructure/CitoidMetadataService.ts
@@ -203,6 +203,8 @@ export class CitoidMetadataService implements IMetadataService {
         publishedDate,
         siteName,
         type: mapCitoidUrlType(citoidData.itemType),
+        doi: citoidData.DOI,
+        isbn: citoidData.ISBN,
       });
 
       return metadataResult;