diff --git a/check_process b/check_process
index 26f0c64..527981d 100644
--- a/check_process
+++ b/check_process
@@ -12,6 +12,8 @@
 		setup_private=1
 		setup_public=1
 		upgrade=1
+		#4.8.1
+		upgrade=1	from_commit=ca1c1238a8d8f1dc89c092216491d3ec9464382c
 		backup_restore=1
 		multi_instance=1
 		change_url=1
@@ -19,6 +21,6 @@
 Email= anmol@datamol.org
 Notification=change
 ;;; Upgrade options
-	; commit=CommitHash
-		name=Name and date of the commit.
+	; commit=ca1c1238a8d8f1dc89c092216491d3ec9464382c
+		name=4.8.1
 		manifest_arg=domain=DOMAIN&path=PATH&is_public=1&
diff --git a/scripts/upgrade b/scripts/upgrade
index b908949..2c58ded 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -53,8 +53,10 @@ upgrade_type=$(ynh_check_app_version_changed)
 #=================================================
 ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
-### If nobody installed your app before 4.1,
-### then you may safely remove these lines
+if [ -z "$admin" ] then
+	admin="default_value";
+	ynh_app_setting_set --app=$app --key=admin --value=$admin
+fi
 
 # Cleaning legacy permissions
 if ynh_legacy_permissions_exists; then