diff --git a/htdocs/install/mysql/migration/12.0.0-13.0.0.sql b/htdocs/install/mysql/migration/12.0.0-13.0.0.sql
index defe5736aa8..e3a1d1807bc 100644
--- a/htdocs/install/mysql/migration/12.0.0-13.0.0.sql
+++ b/htdocs/install/mysql/migration/12.0.0-13.0.0.sql
@@ -320,3 +320,5 @@ ALTER TABLE llx_c_ticket_category ADD COLUMN force_severity varchar(32) NULL;
 
 ALTER TABLE llx_expensereport_ik ADD COLUMN ikoffset double DEFAULT 0 NOT NULL;
 
+ALTER TABLE llx_paiement ADD COLUMN ref_ext varchar(255) AFTER ref;
+