diff --git a/textproc/py-isbntools/Makefile b/textproc/py-isbntools/Makefile
index e84389f67101..d86670851091 100644
--- a/textproc/py-isbntools/Makefile
+++ b/textproc/py-isbntools/Makefile
@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	isbntools
-PORTVERSION=	4.3.22
+PORTVERSION=	4.3.23
 CATEGORIES=	textproc python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -13,7 +13,7 @@ COMMENT=	App and framework for all things about ISBN
 LICENSE=	LGPL3
 LICENSE_FILE=	${WRKSRC}/LICENSE-LGPL-3.0-only.txt
 
-RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}isbnlib>=3.10.0<3.11.0:textproc/py-isbnlib@${PY_FLAVOR}
+RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}isbnlib>=3.10.1<3.11.0:textproc/py-isbnlib@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	autoplist concurrent distutils
diff --git a/textproc/py-isbntools/distinfo b/textproc/py-isbntools/distinfo
index d4a1c41b66c6..1bdea50ffdda 100644
--- a/textproc/py-isbntools/distinfo
+++ b/textproc/py-isbntools/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1585564906
-SHA256 (isbntools-4.3.22.tar.gz) = b560792d22c887fa1a21eba7e06525cbc1971166d8e8c0550692e389c5da7f65
-SIZE (isbntools-4.3.22.tar.gz) = 39008
+TIMESTAMP = 1589908792
+SHA256 (isbntools-4.3.23.tar.gz) = b5be455cea7c2f4833201b3135bf1cf874925c199805fe8670e2ae93cf32a8a4
+SIZE (isbntools-4.3.23.tar.gz) = 39461