diff --git a/textproc/py-tomli-w/Makefile b/textproc/py-tomli-w/Makefile
index d074d88b9e8f..f7e7d1f92e5b 100644
--- a/textproc/py-tomli-w/Makefile
+++ b/textproc/py-tomli-w/Makefile
@@ -1,24 +1,24 @@
 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 
 PORTNAME=	tomli-w
 PORTVERSION=	0.4.0
 CATEGORIES=	textproc python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	tomli_w-${PORTVERSION}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Lil' TOML writer
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
 post-patch:
-	@${CP} ${FILESDIR}/setup.py ${WRKSRC}/
+	@${SED} -e 's|%%PORTVERSION%%|${PORTVERSION}|' ${FILESDIR}/setup.py > ${WRKSRC}/setup.py
 
 .include <bsd.port.mk>
diff --git a/textproc/py-tomli-w/files/setup.py b/textproc/py-tomli-w/files/setup.py
index bedbff79c68c..6dec69631d48 100644
--- a/textproc/py-tomli-w/files/setup.py
+++ b/textproc/py-tomli-w/files/setup.py
@@ -1,21 +1,21 @@
 #!/usr/bin/env python
 # setup.py generated by flit for tools that don't yet use PEP 517
 
 from distutils.core import setup
 
 packages = \
 ['tomli_w']
 
 package_data = \
 {'': ['*']}
 
 setup(name='tomli_w',
-      version='0.4.0',
+      version='%%PORTVERSION%%',
       description="A lil' TOML writer",
       author=None,
       author_email='Taneli Hukkinen <hukkin@users.noreply.github.com>',
       url=None,
       packages=packages,
       package_data=package_data,
       python_requires='>=3.6',
      )