diff --git a/scripts/upgrade b/scripts/upgrade
index b9ae98d..7b277e7 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -29,8 +29,10 @@ then
 	ynh_use_go
 
 	pushd $install_dir
-		git config --global --add safe.directory $install_dir
-		git pull https://git.j3s.sh/vore "$install_dir" --quiet
+		chown -R $app:www-data "$install_dir"
+		git config --system --add safe.directory $install_dir
+		
+		ynh_exec_warn_less git pull https://git.j3s.sh/vore "$install_dir" --quiet
 		ynh_add_config --template="../conf/index.tmpl.html" --destination="$install_dir/files/index.tmpl.html"
 		ynh_exec_warn_less ynh_exec_as $app CGO_ENABLED=0 $ynh_go build -o $install_dir/
 	popd