diff --git a/src/marshmallow/fields.py b/src/marshmallow/fields.py
index 4458fab1a..a5e2396c9 100644
--- a/src/marshmallow/fields.py
+++ b/src/marshmallow/fields.py
@@ -943,6 +943,10 @@ def _validated(self, value):
             ):
                 return super()._validated(value)
             raise self.make_error("invalid", input=value)
+
+        if value is True or value is False:
+            value = self._format_num(value)
+
         return super()._validated(value)