diff --git a/textproc/py-sphinx-inline-tabs/Makefile b/textproc/py-sphinx-inline-tabs/Makefile
index 3b34d7575f03..a23c6d7a3aae 100644
--- a/textproc/py-sphinx-inline-tabs/Makefile
+++ b/textproc/py-sphinx-inline-tabs/Makefile
@@ -1,23 +1,30 @@
 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 
 PORTNAME=	sphinx-inline-tabs
 PORTVERSION=	2021.4.11b9
+PORTREVISION=	1
 CATEGORIES=	textproc python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	sphinx_inline_tabs-${PORTVERSION}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Add inline tabbed content to your Sphinx documentation
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}sphinx>=3,1:textproc/py-sphinx@${PY_FLAVOR}
 
 USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+.if ${PYTHON_REL} < 3800
+RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}typing-extensions>=0:devel/py-typing-extensions@${PY_FLAVOR}
+.endif
+
+.include <bsd.port.post.mk>
diff --git a/textproc/py-sphinx-inline-tabs/files/patch-src-sphinx_inline_tabs-_impl.py b/textproc/py-sphinx-inline-tabs/files/patch-src-sphinx_inline_tabs-_impl.py
new file mode 100644
index 000000000000..b98a87c5bb3d
--- /dev/null
+++ b/textproc/py-sphinx-inline-tabs/files/patch-src-sphinx_inline_tabs-_impl.py
@@ -0,0 +1,15 @@
+--- src/sphinx_inline_tabs/_impl.py.orig	2021-04-11 11:03:11 UTC
++++ src/sphinx_inline_tabs/_impl.py
+@@ -1,7 +1,11 @@
+ """The actual implementation."""
+ 
+ import itertools
+-from typing import List, Literal
++from typing import List
++try:
++    from typing import Literal
++except ImportError:
++    from typing_extensions import Literal
+ 
+ from docutils import nodes
+ from docutils.parsers.rst import directives