diff --git a/CHANGELOG.md b/CHANGELOG.md
index 38b23fd..5bd8ead 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+v 1.45.2 [21-Ene-2022]
+----------------------
+    - Error: Al cancelar un CFDI
+
+
 v 1.45.1 [20-Ene-2022]
 ----------------------
     - Error: Al enviar correos con la nueva configuración
diff --git a/VERSION b/VERSION
index 0c15f2f..e522f07 100644
--- a/VERSION
+++ b/VERSION
@@ -1,2 +1,2 @@
-1.45.1
+1.45.2
 
diff --git a/source/app/controllers/utils.py b/source/app/controllers/utils.py
index 6886885..b6b8a90 100644
--- a/source/app/controllers/utils.py
+++ b/source/app/controllers/utils.py
@@ -785,11 +785,15 @@ def cancel_xml_sign(invoice, args, auth, certificado):
 
     cert = SATCertificate(certificado.cer, certificado.key_enc.encode())
     pac = PACS[auth['pac']]()
+    folio_new = ''
+    if args['uuid']:
+        folio_new = f' FolioSustitucion="{args["uuid"]}"'
     data = {
         'rfc': certificado.rfc,
         'fecha': now().isoformat()[:19],
         'uuid': str(invoice.uuid).upper(),
         'motivo': args['reason'],
+        'folio': folio_new,
     }
     template = TEMPLATE_CANCEL.format(**data)
     tree = ET.fromstring(template.encode())
diff --git a/source/app/settings.py b/source/app/settings.py
index 811f78f..f0d70a1 100644
--- a/source/app/settings.py
+++ b/source/app/settings.py
@@ -42,7 +42,7 @@ except ImportError:
 
 
 DEBUG = DEBUG
-VERSION = '1.45.1'
+VERSION = '1.45.2'
 EMAIL_SUPPORT = ('soporte@empresalibre.mx',)
 TITLE_APP = '{} v{}'.format(TITLE_APP, VERSION)
 
@@ -258,7 +258,7 @@ DEFAULT_GLOBAL = {
 
 TEMPLATE_CANCEL = """<Cancelacion xmlns="http://cancelacfd.sat.gob.mx" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" RfcEmisor="{rfc}" Fecha="{fecha}">
   <Folios>
-    <Folio UUID={uuid} Motivo={motivo}/>
+    <Folio UUID="{uuid}" Motivo="{motivo}"{folio}/>
   </Folios>
   <Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
     <SignedInfo>