diff --git a/scripts/upgrade b/scripts/upgrade
index 7ec44c3..c9d5156 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -106,6 +106,7 @@ then
 	ynh_script_progression --message="Upgrading source files..."
 
 	pushd "$final_path"
+		git config --global --add safe.directory $final_path
 		git checkout master
 		git pull --quiet
 		git checkout $COMMIT --quiet