diff --git a/graphics/py-altair/Makefile b/graphics/py-altair/Makefile
index eeb292391942..c112fbf9de79 100644
--- a/graphics/py-altair/Makefile
+++ b/graphics/py-altair/Makefile
@@ -1,32 +1,32 @@
 PORTNAME=	altair
-PORTVERSION=	6.0.0
+PORTVERSION=	6.1.0
 CATEGORIES=	graphics python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Declarative statistical visualization library for Python
 WWW=		https://altair-viz.github.io/ \
 		https://github.com/vega/altair
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}hatchling>=0:devel/py-hatchling@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}Jinja2>=0:devel/py-Jinja2@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}jsonschema>=3.0:devel/py-jsonschema@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}narwhals>=1.27.1:math/py-narwhals@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}narwhals>=2.4.0:math/py-narwhals@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}packaging>=0:devel/py-packaging@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	autoplist concurrent pep517
 
 NO_ARCH=	yes
 
 .include <bsd.port.pre.mk>
 
 .if ${PYTHON_REL} < 31500
 RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}typing-extensions>=4.12.0:devel/py-typing-extensions@${PY_FLAVOR}
 .endif
 
 .include <bsd.port.post.mk>
diff --git a/graphics/py-altair/distinfo b/graphics/py-altair/distinfo
index 57a3da3c02b5..7ed34aab2975 100644
--- a/graphics/py-altair/distinfo
+++ b/graphics/py-altair/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1763853414
-SHA256 (altair-6.0.0.tar.gz) = 614bf5ecbe2337347b590afb111929aa9c16c9527c4887d96c9bc7f6640756b4
-SIZE (altair-6.0.0.tar.gz) = 763834
+TIMESTAMP = 1777252758
+SHA256 (altair-6.1.0.tar.gz) = dda699216cf85b040d968ae5a569ad45957616811e38760a85e5118269daca67
+SIZE (altair-6.1.0.tar.gz) = 765519