diff --git a/textproc/py-sphinx-gallery/Makefile b/textproc/py-sphinx-gallery/Makefile
index e994b8ab3a39..c5fe3fc2b86d 100644
--- a/textproc/py-sphinx-gallery/Makefile
+++ b/textproc/py-sphinx-gallery/Makefile
@@ -1,27 +1,27 @@
 PORTNAME=	sphinx-gallery
-PORTVERSION=	0.20.0
+PORTVERSION=	0.21.0
 CATEGORIES=	textproc python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	sphinx_gallery-${PORTVERSION}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Sphinx extension that builds an HTML gallery of examples from any set of Python scripts
 WWW=		https://sphinx-gallery.github.io/stable/ \
 		https://github.com/sphinx-gallery/sphinx-gallery
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools>=0:devel/py-setuptools@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}setuptools-scm>=7:devel/py-setuptools-scm@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pillow>=0:graphics/py-pillow@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}sphinx>=5,1:textproc/py-sphinx@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	autoplist concurrent pep517
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>
diff --git a/textproc/py-sphinx-gallery/distinfo b/textproc/py-sphinx-gallery/distinfo
index 274d0ae9f897..e10cf82b4a91 100644
--- a/textproc/py-sphinx-gallery/distinfo
+++ b/textproc/py-sphinx-gallery/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1765032824
-SHA256 (sphinx_gallery-0.20.0.tar.gz) = 70281510c6183d812d3595957005ccf555c5a793f207410f6cd16a25bf08d735
-SIZE (sphinx_gallery-0.20.0.tar.gz) = 473502
+TIMESTAMP = 1777252806
+SHA256 (sphinx_gallery-0.21.0.tar.gz) = 72a7734ad9100878345b8b65c249148cc0f1cd0e274adf3e3900214e4c2c5bee
+SIZE (sphinx_gallery-0.21.0.tar.gz) = 483616
diff --git a/textproc/py-sphinx-gallery/files/patch-pyproject.toml b/textproc/py-sphinx-gallery/files/patch-pyproject.toml
new file mode 100644
index 000000000000..c10a204c171c
--- /dev/null
+++ b/textproc/py-sphinx-gallery/files/patch-pyproject.toml
@@ -0,0 +1,11 @@
+--- pyproject.toml.orig	2026-04-24 03:08:54 UTC
++++ pyproject.toml
+@@ -31,7 +31,7 @@ dependencies = [
+ ]
+ dependencies = [
+   "pillow",
+-  "sphinx>=6", # 6.0.0 out on 2022/12/29
++  "sphinx>=5", # 6.0.0 out on 2022/12/29
+ ]
+ optional-dependencies.animations = [
+   "sphinxcontrib-video",