diff --git a/CHANGELOG.md b/CHANGELOG.md
index b304efc..e1a19db 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 # Lista de cambios
 
 
+## v 0.5.0 [06-Feb-22]
+---
+* Se cambia la lógica para evitar el error de token caducado.
+
+
 ## v 0.4.0 [02-Sep-21]
 ---
 * Se agrega soporte para descargar metadatos
diff --git a/README.md b/README.md
index 784f1fe..8b11347 100644
--- a/README.md
+++ b/README.md
@@ -8,17 +8,13 @@ Descarga masiva del SAT
 En orden de preferencia
 
 Mauricio Baeza
+
+* G1: `A5DdXxCKPw3QKWVdDVs7CzkNugNUW1sHu5zDJFWxCU2h`
+
 ```
 Euros
 IBAN: BE60 9671 0556 5870
 SWIFT / BIC: TRWIBEB1XXX
 ```
 
-* BCH: `qztd3l00xle5tffdqvh2snvadkuau2ml0uqm4n875d`
-* ETH: `0x61a4f614a30ff686445751ed8328b82b77ecfc69`
-* XRP: `rLSn6Z3T8uCxbcd1oxwfGQN1Fdn5CyGujK` Tag: `6643162`
-* LTC: `MBcgQ3LQJA4W2wsXknTdm2fxRSysLaBJHS`
-* BTC: `3FhiXcXmAesmQzrNEngjHFnvaJRhU1AGWV`
-
-
 Mira la [documentación](https://git.cuates.net/elmau/cfdi-descarga/wiki/Inicio)
diff --git a/requirements.txt b/requirements.txt
index 68153fd..9237b2b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 httpx
 peewee
-cryptography
+cryptography==3.4.8
 lxml
diff --git a/source/sat/util.py b/source/sat/util.py
index 0e202a5..2397048 100644
--- a/source/sat/util.py
+++ b/source/sat/util.py
@@ -76,7 +76,13 @@ def fiel_validar(args):
     if not result:
         return
 
-    password = getpass.getpass('Introduce la contraseña del archivo KEY: ')
+    try:
+        password = getpass.getpass('Introduce la contraseña del archivo KEY: ')
+    except KeyboardInterrupt:
+        msg = 'Proceso cancelado'
+        log.info(msg)
+        return
+
     if not password:
         msg = 'La contraseña es requerida para validar la FIEL'
         log.error(msg)
@@ -372,9 +378,11 @@ def _validate_args(args):
     return True, data
 
 
-def _download(sat, data, key):
+def _download(data, key):
     OK = '5000'
 
+    sat = SATWebService(data['cert'])
+
     result = _request_download(sat, data, key)
     if result['CodEstatus'] != OK:
         log.error(result)
@@ -389,7 +397,9 @@ def _download(sat, data, key):
         sleep(1)
 
     while True:
+        sat = SATWebService(data['cert'])
         result = sat.verify(data)
+
         if result['EstadoSolicitud'] in ('1', '2'):
             msg = 'Esperando un minuto más para volver a verificar...'
             log.info(msg)
@@ -432,12 +442,12 @@ def descargar(args):
         return
 
     if data['type'] == 'e':
-        _download(sat, data, 'RfcEmisor')
+        _download(data, 'RfcEmisor')
     elif data['type'] == 'r':
-        _download(sat, data, 'RfcReceptor')
+        _download(data, 'RfcReceptor')
     else:
-        _download(sat, data, 'RfcEmisor')
-        _download(sat, data, 'RfcReceptor')
+        _download(data, 'RfcEmisor')
+        _download(data, 'RfcReceptor')
 
     return