Index: devel/Makefile
===================================================================
--- devel/Makefile
+++ devel/Makefile
@@ -4399,6 +4399,7 @@
     SUBDIR += py-buildbot-worker
     SUBDIR += py-buildbot-www
     SUBDIR += py-bullet3
+    SUBDIR += py-bumpversion
     SUBDIR += py-cached-property
     SUBDIR += py-cachetools
     SUBDIR += py-calendar
Index: devel/py-bumpversion/Makefile
===================================================================
--- /dev/null
+++ devel/py-bumpversion/Makefile
@@ -0,0 +1,45 @@
+# $FreeBSD$
+
+PORTNAME=	bumpversion
+DISTVERSIONPREFIX=	v
+DISTVERSION=	0.5.3
+CATEGORIES=	devel python
+MASTER_SITES=	CHEESESHOP
+PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
+
+MAINTAINER=	loader@FreeBSD.org
+COMMENT=	Version-bump your software with a single command
+
+LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/LICENSE.rst
+
+TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytest>0:devel/py-pytest@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}mock>0:devel/py-mock@${PY_FLAVOR} \
+		git:devel/git \
+		hg:devel/mercurial
+
+USES=		python
+USE_GITHUB=	yes
+USE_PYTHON=	autoplist concurrent distutils
+
+NO_ARCH=	yes
+GH_ACCOUNT=	peritus
+
+OPTIONS_DEFINE=	GIT MERCURIAL
+
+GIT_DESC=	Install devel/git as runtime dependency
+MERCURIAL_DESC=	Install devel/mercurial as runtime dependency
+
+GIT_RUN_DEPENDS=	git:devel/git
+MERCURIAL_RUN_DEPENDS=	hg:devel/mercurial
+
+post-patch:
+	${REINPLACE_CMD} -e '/bumpversion --help/s|bumpversion|${STAGEDIR}${PREFIX}/bin/bumpversion${UNIQUE_SUFFIX}|' \
+	-e '/bumpversion patch;/s|bumpversion|${STAGEDIR}${PREFIX}/bin/bumpversion${UNIQUE_SUFFIX}|' \
+	${WRKSRC}/tests.py
+
+do-test:
+	@cd ${TEST_WRKSRC} && ${SETENV} ${TEST_ENV} PYTHONPATH=${PYDISTUTILS_EGGINFODIR} \
+	${PYTHON_CMD} -m pytest
+
+.include <bsd.port.mk>
Index: devel/py-bumpversion/distinfo
===================================================================
--- /dev/null
+++ devel/py-bumpversion/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1534859060
+SHA256 (peritus-bumpversion-v0.5.3_GH0.tar.gz) = 97ac6efca7544853309b68efe92f113ab6bddb77ecbaefa5702a6183a30bcb33
+SIZE (peritus-bumpversion-v0.5.3_GH0.tar.gz) = 25073
Index: devel/py-bumpversion/files/patch-bumpversion_____init____.py
===================================================================
--- /dev/null
+++ devel/py-bumpversion/files/patch-bumpversion_____init____.py
@@ -0,0 +1,13 @@
+https://github.com/peritus/bumpversion/pull/183
+
+--- bumpversion/__init__.py.orig	2015-04-15 09:12:43 UTC
++++ bumpversion/__init__.py
+@@ -30,6 +30,8 @@ import codecs
+ 
+ if sys.version_info[0] == 2:
+     sys.stdout = codecs.getwriter('utf-8')(sys.stdout)
++elif sys.version_info[0] == 3 and sys.version_info[1] <= 6:
++    sys.stdout = codecs.getwriter('utf-8')(sys.stdout.buffer, 'strict')
+ 
+ __VERSION__ = '0.5.3'
+ 
Index: devel/py-bumpversion/pkg-descr
===================================================================
--- /dev/null
+++ devel/py-bumpversion/pkg-descr
@@ -0,0 +1,4 @@
+A small command line tool to simplify releasing software by updating
+all version strings in your source code by the correct increment. 
+
+WWW: https://github.com/peritus/bumpversion