diff --git a/devel/py-gitdb/Makefile b/devel/py-gitdb/Makefile
index fc7769bc637c..f02ed83a8a6b 100644
--- a/devel/py-gitdb/Makefile
+++ b/devel/py-gitdb/Makefile
@@ -1,24 +1,25 @@
 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 
 PORTNAME=	gitdb
 PORTVERSION=	4.0.7
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Git Object Database
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}smmap>=3.0.1<5:devel/py-smmap@${PY_FLAVOR}
+RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}smmap>=3.0.1<6:devel/py-smmap@${PY_FLAVOR}
 
 USES=		python:3.4+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
 CONFLICTS_INSTALL=	${PYTHON_PKGNAMEPREFIX}gitdb2
 
 .include <bsd.port.mk>
diff --git a/devel/py-gitdb/files/patch-setup.py b/devel/py-gitdb/files/patch-setup.py
new file mode 100644
index 000000000000..2c3851b04757
--- /dev/null
+++ b/devel/py-gitdb/files/patch-setup.py
@@ -0,0 +1,11 @@
+--- setup.py.orig	2021-03-26 14:25:19 UTC
++++ setup.py
+@@ -20,7 +20,7 @@ setup(
+     packages=('gitdb', 'gitdb.db', 'gitdb.utils', 'gitdb.test'),
+     license="BSD License",
+     zip_safe=False,
+-    install_requires=['smmap>=3.0.1,<5'],
++    install_requires=['smmap>=3.0.1,<6'],
+     long_description="""GitDB is a pure-Python git object database""",
+     python_requires='>=3.4',
+     # See https://pypi.python.org/pypi?%3Aaction=list_classifiers