diff --git a/stock_optional_valuation/AUTHORS.txt b/stock_optional_valuation/AUTHORS.txt
index 7106ca0eb..ce64f52de 100644
--- a/stock_optional_valuation/AUTHORS.txt
+++ b/stock_optional_valuation/AUTHORS.txt
@@ -1 +1,2 @@
 Lorenzo Battistini <lorenzo.battistini@agilebg.com>
+Leonardo Pistone <leonardo.pistone@agilebg.com>