diff --git a/textproc/py-readme_renderer/Makefile b/textproc/py-readme_renderer/Makefile
index b65e43bff2f0..0d0dec750131 100644
--- a/textproc/py-readme_renderer/Makefile
+++ b/textproc/py-readme_renderer/Makefile
@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.9 2023/05/02 16:55:31 wiz Exp $
+# $NetBSD: Makefile,v 1.10 2023/06/28 08:57:58 wiz Exp $
 
-DISTNAME=	readme_renderer-37.3
+DISTNAME=	readme_renderer-40.0
 PKGNAME=	${PYPKGPREFIX}-${DISTNAME}
 CATEGORIES=	textproc python
 MASTER_SITES=	${MASTER_SITE_PYPI:=r/readme_renderer/}
@@ -17,7 +17,7 @@ TEST_DEPENDS+=	${PYPKGPREFIX}-test-[0-9]*:../../devel/py-test
 
 USE_LANGUAGES=	# none
 
-PYTHON_VERSIONS_INCOMPATIBLE=	27
+PYTHON_VERSIONS_INCOMPATIBLE=	27 37
 
 do-test:
 	cd ${WRKSRC} && ${SETENV} ${TEST_ENV} pytest-${PYVERSSUFFIX} tests
diff --git a/textproc/py-readme_renderer/distinfo b/textproc/py-readme_renderer/distinfo
index afd1e411c61c..13aff2da77dd 100644
--- a/textproc/py-readme_renderer/distinfo
+++ b/textproc/py-readme_renderer/distinfo
@@ -1,5 +1,5 @@
-$NetBSD: distinfo,v 1.8 2022/11/22 13:19:55 adam Exp $
+$NetBSD: distinfo,v 1.9 2023/06/28 08:57:58 wiz Exp $
 
-BLAKE2s (readme_renderer-37.3.tar.gz) = ffa87847a3a9fabdab97bd403d0826a106e835a686b37fbb37643ac40065ed26
-SHA512 (readme_renderer-37.3.tar.gz) = e4c060074cae3d23a10ef46f64d1426dab73e1618fe0920758d701d7ec4ced8120d4791ab29691306d0ab36f45447b4dc42be20d086b2f514111ef091204491c
-Size (readme_renderer-37.3.tar.gz) = 29718 bytes
+BLAKE2s (readme_renderer-40.0.tar.gz) = e39d58f1bfeecc9da441fcb6777033b34a2255af40a421878a30ff2f3768c516
+SHA512 (readme_renderer-40.0.tar.gz) = 8b598f7882e5e4a3a6c3b010c2252fd4a4babd5e90426dcf35f0586391cc0c2f2f106e016cef24d8fc5f4ed2712e5f88fada4cda160f42158979b6ec14672d36
+Size (readme_renderer-40.0.tar.gz) = 32300 bytes