diff --git a/pom.xml b/pom.xml
index 93258cf..06f236e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <groupId>eu.dnetlib.dhp</groupId>
     <artifactId>dhp-schemas</artifactId>
     <packaging>jar</packaging>
-    <version>9.0.1-SNAPSHOT</version>
+    <version>9.0.0-SNAPSHOT</version>
 
     <licenses>
         <license>
diff --git a/src/main/java/eu/dnetlib/dhp/schema/solr/RelatedRecord.java b/src/main/java/eu/dnetlib/dhp/schema/solr/RelatedRecord.java
index ac93466..e5159bc 100644
--- a/src/main/java/eu/dnetlib/dhp/schema/solr/RelatedRecord.java
+++ b/src/main/java/eu/dnetlib/dhp/schema/solr/RelatedRecord.java
@@ -14,7 +14,7 @@ public class RelatedRecord implements Serializable {
     private String websiteurl; // datasource, organizations, projects
 
     // results
-    private List<Author> author;
+    private List<String> author;
     private String description;
     private String dateofacceptance;
     private String publisher;
@@ -59,11 +59,11 @@ public class RelatedRecord implements Serializable {
         this.title = title;
     }
 
-    public List<Author> getAuthor() {
+    public List<String> getAuthor() {
         return author;
     }
 
-    public void setAuthor(List<Author> author) {
+    public void setAuthor(List<String> author) {
         this.author = author;
     }