Index: head/devel/py-marshmallow/Makefile
===================================================================
--- head/devel/py-marshmallow/Makefile	(revision 483919)
+++ head/devel/py-marshmallow/Makefile	(revision 483920)
@@ -1,24 +1,24 @@
 # Created by: Mark Felder <feld@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	marshmallow
-DISTVERSION=	3.0.0b19
+DISTVERSION=	3.0.0b20
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Simplified object serialization for Python
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}dateutil>=0:devel/py-dateutil@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}simplejson>=0:devel/py-simplejson@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>
Index: head/devel/py-marshmallow/distinfo
===================================================================
--- head/devel/py-marshmallow/distinfo	(revision 483919)
+++ head/devel/py-marshmallow/distinfo	(revision 483920)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1540910772
-SHA256 (marshmallow-3.0.0b19.tar.gz) = 5e0053c86e3abaa72a03bbe0021ec97270c13fd6400b682eb1aeaf24b871bc8a
-SIZE (marshmallow-3.0.0b19.tar.gz) = 161637
+TIMESTAMP = 1541183020
+SHA256 (marshmallow-3.0.0b20.tar.gz) = 0a96d88418c4e7c50a39a734c4ed3d2a991a37e6b7a8970dbbdb8ccb7f08ecb0
+SIZE (marshmallow-3.0.0b20.tar.gz) = 162453