diff --git a/htdocs/install/mysql/migration/10.0.0-11.0.0.sql b/htdocs/install/mysql/migration/10.0.0-11.0.0.sql
index 9ffda1e9132..ece1f918845 100644
--- a/htdocs/install/mysql/migration/10.0.0-11.0.0.sql
+++ b/htdocs/install/mysql/migration/10.0.0-11.0.0.sql
@@ -78,3 +78,5 @@ UPDATE llx_bank_url set url = REPLACE( url, 'compta/salaries/', 'salaries/');
 ALTER TABLE llx_stock_mouvement ADD COLUMN fk_projet INTEGER NOT NULL DEFAULT 0 AFTER model_pdf;
 
 ALTER TABLE llx_oauth_token ADD COLUMN fk_soc integer DEFAULT NULL after token;
+
+ALTER TABLE llx_adherent_type ADD COLUMN duration varchar(6) DEFAULT NULL after morphy;