diff --git a/docs/requirements.txt b/docs/requirements.txt
index c1fc0ae..206a896 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -9,7 +9,7 @@ pydata-sphinx-theme
 
 # Dependencias REALES del paquete (para que autodoc pueda importar)
 requests>=2.27.1,<2.34.0
-six>=1.16,<1.18
+six>=1.17.0,<1.18
 cachetools>=5.0,<7.1
 pycryptodome>=3.13,<3.24
 pytz>=2021.3,<2027.0