diff --git a/test-requirements.txt b/test-requirements.txt
new file mode 100644
index 000000000..b409e69d1
--- /dev/null
+++ b/test-requirements.txt
@@ -0,0 +1 @@
+git+https://github.com/commitsun/l10n-spain@14.0-l10n_es_document_numbers#subdirectory=setup/l10n_es_aeat_partner_identification