diff --git a/django/core/validators.py b/django/core/validators.py
index 17cf4cd6cf..070d6fc40b 100644
--- a/django/core/validators.py
+++ b/django/core/validators.py
@@ -204,7 +204,7 @@ class EmailValidator:
             self.domain_allowlist = allowlist
 
     def __call__(self, value):
-        # The maximum length of an email is 254 characters per RFC 5321
+        # The maximum length of an email is 254 characters per RFC 5321/5322
         # section 3.
         if not value or "@" not in value or len(value) > 254:
             raise ValidationError(self.message, code=self.code, params={"value": value})