diff --git a/math/lean/Makefile b/math/lean/Makefile
index 0f969fb9f61b..95a6a9ab39b3 100644
--- a/math/lean/Makefile
+++ b/math/lean/Makefile
@@ -1,46 +1,46 @@
 PORTNAME=	lean
 DISTVERSIONPREFIX=	v
-DISTVERSION=	3.51.0
+DISTVERSION=	3.51.1
 CATEGORIES=	math
 
 PATCH_SITES=	https://github.com/${GH_ACCOUNT}/${GH_PROJECT}/commit/
 PATCHFILES=	5eecaa0b9c860858372a22ab242566671907c913.patch:-p2
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Theorem prover
 WWW=		https://leanprover-community.github.io/
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/../LICENSE
 
 BROKEN_aarch64=	c++ crashes during link on arm64 on math/lean, see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266777
 
 LIB_DEPENDS=	libgmp.so:math/gmp
 
 USES=		cmake:testing compiler:c++11-lang
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	leanprover-community
 
 WRKSRC_SUBDIR=	src
 
 CMAKE_OFF=	BUILD_TESTING
 CMAKE_TESTING_ON=	BUILD_TESTING
 
 OPTIONS_DEFINE=		TCMALLOC THREADS
 OPTIONS_DEFAULT=	TCMALLOC THREADS
 OPTIONS_EXCLUDE_powerpc=	TCMALLOC
 
 TCMALLOC_DESC=		Use tcmalloc from google-perftools as memory allocator
 TCMALLOC_CMAKE_BOOL=	TCMALLOC
 TCMALLOC_LIB_DEPENDS=	libtcmalloc.so:devel/google-perftools
 
 THREADS_CMAKE_BOOL=	MULTI_THREAD
 
 post-build: # workaround for https://github.com/leanprover-community/lean/issues/765
 	@cd ${WRKSRC}/../library && ${BUILD_WRKSRC}/shell/lean --make
 
 post-install:
 	@${FIND} ${STAGEDIR}${PREFIX} -type d -empty -delete
 
 .include <bsd.port.mk>
diff --git a/math/lean/distinfo b/math/lean/distinfo
index d44207c7230b..af11216dec38 100644
--- a/math/lean/distinfo
+++ b/math/lean/distinfo
@@ -1,5 +1,5 @@
-TIMESTAMP = 1684476450
-SHA256 (leanprover-community-lean-v3.51.0_GH0.tar.gz) = 32edaa6ee84f8af50a20f55162f0499c4cf196ba0834e93c610da266cd5d1d9a
-SIZE (leanprover-community-lean-v3.51.0_GH0.tar.gz) = 1918905
+TIMESTAMP = 1685072378
+SHA256 (leanprover-community-lean-v3.51.1_GH0.tar.gz) = 5a4734bf345d6c5ba6eacd2d33d86d9540eea7d008b4ebf8dde126e729fcbcaf
+SIZE (leanprover-community-lean-v3.51.1_GH0.tar.gz) = 1918894
 SHA256 (5eecaa0b9c860858372a22ab242566671907c913.patch) = 971765311b28bfc850803f355e9607dee5aa537565d24ffdc52562b6d874e99a
 SIZE (5eecaa0b9c860858372a22ab242566671907c913.patch) = 3218