diff --git a/science/py-chainer/Makefile b/science/py-chainer/Makefile
index 971f4fe2bfff..ec157bbcad7f 100644
--- a/science/py-chainer/Makefile
+++ b/science/py-chainer/Makefile
@@ -1,25 +1,24 @@
 PORTNAME=	chainer
-DISTVERSION=	7.8.0
-PORTREVISION=	1
+DISTVERSION=	7.8.1
 CATEGORIES=	science # machine-learning
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Deep learning framework
 
 LICENSE=	MIT
 
 LIB_DEPENDS=	libprotobuf.so:devel/protobuf
 RUN_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}filelock>0:sysutils/py-filelock@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}protobuf>=3.0.0:devel/py-protobuf@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}six>=1.9.0:devel/py-six@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}typing-extensions>0:devel/py-typing-extensions@${PY_FLAVOR}
 
 USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>
diff --git a/science/py-chainer/distinfo b/science/py-chainer/distinfo
index f95aa74e56df..19d2935c89bf 100644
--- a/science/py-chainer/distinfo
+++ b/science/py-chainer/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1624209733
-SHA256 (chainer-7.8.0.tar.gz) = 266de27c4beda59e58f24a5d0d60f1569703d31e8b1592aa8dd38566c955435b
-SIZE (chainer-7.8.0.tar.gz) = 1043769
+TIMESTAMP = 1643087063
+SHA256 (chainer-7.8.1.tar.gz) = 179f06176f8d7a42385bc7811956db04e68213cfe30f5081491b9e2b6ff70de8
+SIZE (chainer-7.8.1.tar.gz) = 1044012