diff --git a/satcfdi/csf/__init__.py b/satcfdi/csf/__init__.py
index ecebe1f..005ec1f 100644
--- a/satcfdi/csf/__init__.py
+++ b/satcfdi/csf/__init__.py
@@ -1,7 +1,8 @@
+import warnings
 from datetime import datetime
 
 import requests
-from bs4 import BeautifulSoup
+from bs4 import BeautifulSoup, XMLParsedAsHTMLWarning
 
 from .. import __version__
 from ..catalogs import select_all
@@ -9,6 +10,8 @@
 from ..models import Code
 from ..sat_requests_utils import SSLAdapter
 
+warnings.filterwarnings("ignore", category=XMLParsedAsHTMLWarning)
+
 
 def retrieve(rfc: str, id_cif: str):
     data = _request_constancia(rfc, id_cif)