diff --git a/science/py-asdf/Makefile b/science/py-asdf/Makefile
index 420935ca2e5a..1fd230cb4771 100644
--- a/science/py-asdf/Makefile
+++ b/science/py-asdf/Makefile
@@ -1,48 +1,53 @@
 PORTNAME=	asdf
-PORTVERSION=	3.3.0
+PORTVERSION=	3.4.0
 CATEGORIES=	science python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Python tools to handle ASDF files
 WWW=		https://asdf.readthedocs.io/en/latest/ \
 		https://github.com/asdf-format/asdf
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools>=60:devel/py-setuptools@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}setuptools-scm>=3.4:devel/py-setuptools-scm@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}asdf-standard>=1.1.0:science/py-asdf-standard@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}asdf-transform-schemas>=0.3:science/py-asdf-transform-schemas@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}attrs>=20.1.0:devel/py-attrs@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}importlib-metadata>=4.11.4:devel/py-importlib-metadata@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}attrs>=22.2.0:devel/py-attrs@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}jmespath>=0.6.2:devel/py-jmespath@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}numpy>=1.22,1:math/py-numpy@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}packaging>=19:devel/py-packaging@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pyyaml>=5.4.1:devel/py-pyyaml@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}semantic-version>=2.8:devel/py-semantic-version@${PY_FLAVOR}
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}fsspec>=2022.8.2:devel/py-fsspec@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}lz4>=0.10:archivers/py-lz4@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}psutil>=0:sysutils/py-psutil@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pytest-doctestplus>=0:devel/py-pytest-doctestplus@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pytest-remotedata>=0:devel/py-pytest-remotedata@${PY_FLAVOR}
 # fsspec[http]
 TEST_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}aiohttp>=0:www/py-aiohttp@${PY_FLAVOR}
 
 USES=		python:3.9+ shebangfix
 USE_PYTHON=	autoplist concurrent pep517 pytest
 
 NO_ARCH=	yes
 
 SHEBANG_FILES=	asdf/_jsonschema/json/bin/jsonschema_suite
 
 OPTIONS_DEFINE=	ALL
 OPTIONS_DEFAULT=ALL
 ALL_DESC=	Lz4 compression algorithm support
 
 ALL_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}lz4>=0.10:archivers/py-lz4@${PY_FLAVOR}
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+.if ${PYTHON_REL} < 31100
+RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}importlib-metadata>=4.11.4:devel/py-importlib-metadata@${PY_FLAVOR}
+.endif
+
+.include <bsd.port.post.mk>
diff --git a/science/py-asdf/distinfo b/science/py-asdf/distinfo
index daac32e6b6a9..b9a579d01a94 100644
--- a/science/py-asdf/distinfo
+++ b/science/py-asdf/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1720893194
-SHA256 (asdf-3.3.0.tar.gz) = 6aea21f7944fdd979d383773511e529ef30adade14b4037e5080fc16c7459e5f
-SIZE (asdf-3.3.0.tar.gz) = 801412
+TIMESTAMP = 1723201093
+SHA256 (asdf-3.4.0.tar.gz) = 5a2f0b9de6732a472b4137aa5b59d3c20703e7b70f45ea38c2dcbfc95c6370ef
+SIZE (asdf-3.4.0.tar.gz) = 802241