diff --git a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
index 0219765..f863b56 100644
--- a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
+++ b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
@@ -1248,6 +1248,21 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 		else if (type.compareTo("JOB_COMPLETED_OK") == 0) {
 			return NotificationType.JOB_COMPLETED_OK;
 		}
+		else if (type.compareTo("DOCUMENT_WORKFLOW_EDIT") == 0) {
+			return NotificationType.DOCUMENT_WORKFLOW_EDIT;
+		}
+		else if (type.compareTo("DOCUMENT_WORKFLOW_VIEW") == 0) {
+			return NotificationType.DOCUMENT_WORKFLOW_VIEW;
+		}
+		else if (type.compareTo("DOCUMENT_WORKFLOW_STEP_FORWARD_OWNER") == 0) {
+			return NotificationType.DOCUMENT_WORKFLOW_STEP_FORWARD_OWNER;
+		}
+		else if (type.compareTo("DOCUMENT_WORKFLOW_STEP_FORWARD_PEER") == 0) {
+			return NotificationType.DOCUMENT_WORKFLOW_STEP_FORWARD_PEER;
+		}
+		else if (type.compareTo("DOCUMENT_WORKFLOW_STEP_REQUEST_TASK") == 0) {
+			return NotificationType.DOCUMENT_WORKFLOW_STEP_REQUEST_TASK;
+		}
 		else if (type.compareTo("GENERIC") == 0) {
 			return NotificationType.GENERIC;
 		}