diff --git a/scripts/_common.sh b/scripts/_common.sh
index 8de137a..b74e818 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -6,7 +6,7 @@
 
 nodejs_version=14
 
-mongo_version=5.0
+mongo_version=6.0
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/change_url b/scripts/change_url
index a85a152..9743841 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -19,8 +19,6 @@ old_path=$YNH_APP_OLD_PATH
 new_domain=$YNH_APP_NEW_DOMAIN
 new_path=$YNH_APP_NEW_PATH
 
-app=$YNH_APP_INSTANCE_NAME
-
 #=================================================
 # BACKUP BEFORE CHANGE URL THEN ACTIVE TRAP
 #=================================================