diff --git a/src/main/java/eu/dnetlib/dhp/schema/common/ModelSupport.java b/src/main/java/eu/dnetlib/dhp/schema/common/ModelSupport.java
index 990d719..ac2df6d 100644
--- a/src/main/java/eu/dnetlib/dhp/schema/common/ModelSupport.java
+++ b/src/main/java/eu/dnetlib/dhp/schema/common/ModelSupport.java
@@ -309,7 +309,8 @@ public class ModelSupport {
 			"yyyy-MM-dd'T'hh:mm:ss.SSS'Z'",
 			"yyyy-MM-dd'T'hh:mm:ss'Z'",
 			"yyyy-MM-dd hh:mm:ss'Z'",
-			"yyyy-MM-dd hh:mm:ss"
+			"yyyy-MM-dd hh:mm:ss",
+			"yyyy-MM-dd"
 	};
 
 	private ModelSupport() {