diff --git a/security/keybase/Makefile b/security/keybase/Makefile
index cc30469f2888..865e8d0bd86a 100644
--- a/security/keybase/Makefile
+++ b/security/keybase/Makefile
@@ -1,28 +1,28 @@
 PORTNAME=	keybase
-PORTVERSION=	6.5.2
+PORTVERSION=	6.6.0
 DISTVERSIONPREFIX=	v
 CATEGORIES=	security
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Keybase.io client and Keybase Filesystem (KBFS)
 WWW=		https://keybase.io/docs/command_line \
 		https://keybase.io/docs/kbfs \
 		https://github.com/keybase/client
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/../LICENSE
 
 USES=		cpe go:modules
 
 GO_BUILDFLAGS=	-tags production
 GO_MOD_DIST=	github
 GO_MODULE=	github.com/keybase/client/go
 GO_TARGET=	./keybase ./kbfs/kbfsfuse ./kbfs/kbfsgit/git-remote-keybase ./kbfs/kbfstool
 WRKSRC_SUBDIR=	go
 
 PLIST_FILES=	bin/git-remote-keybase bin/kbfsfuse bin/kbfstool bin/keybase
 
 USE_GITHUB=	yes
 GH_PROJECT=	client
 
 .include <bsd.port.mk>
diff --git a/security/keybase/distinfo b/security/keybase/distinfo
index 7ae3d3c62b8b..e9e2cbd82b97 100644
--- a/security/keybase/distinfo
+++ b/security/keybase/distinfo
@@ -1,5 +1,5 @@
-TIMESTAMP = 1771421468
-SHA256 (go/security_keybase/keybase-client-v6.5.2_GH0/go.mod) = a22fc2d20a8f4e6574303e505e0726e84954eb495b30e9ab6a58cc37d0072d44
-SIZE (go/security_keybase/keybase-client-v6.5.2_GH0/go.mod) = 19305
-SHA256 (go/security_keybase/keybase-client-v6.5.2_GH0/keybase-client-v6.5.2_GH0.tar.gz) = 1f89966ce2002a2ff42f8a14a126d25755ddb4a12cc1899380a81f95679a52f6
-SIZE (go/security_keybase/keybase-client-v6.5.2_GH0/keybase-client-v6.5.2_GH0.tar.gz) = 54134987
+TIMESTAMP = 1773966762
+SHA256 (go/security_keybase/keybase-client-v6.6.0_GH0/go.mod) = d21604f10e540a07702080b6fd354e218c99674d3208c670d8fefb616a01bb8a
+SIZE (go/security_keybase/keybase-client-v6.6.0_GH0/go.mod) = 12007
+SHA256 (go/security_keybase/keybase-client-v6.6.0_GH0/keybase-client-v6.6.0_GH0.tar.gz) = 9df261517717cbda5677d02cf7d5aeabde3ca6f02ceca5d58d395087d1350ca0
+SIZE (go/security_keybase/keybase-client-v6.6.0_GH0/keybase-client-v6.6.0_GH0.tar.gz) = 89146201
diff --git a/security/keybase/files/patch-kbfs-libkbfs-disk_limits_unix.go b/security/keybase/files/patch-kbfs-libkbfs-disk_limits_unix.go
index e521bb1acba8..a4e31957616b 100644
--- a/security/keybase/files/patch-kbfs-libkbfs-disk_limits_unix.go
+++ b/security/keybase/files/patch-kbfs-libkbfs-disk_limits_unix.go
@@ -1,18 +1,19 @@
---- kbfs/libkbfs/disk_limits_unix.go.orig	2019-08-20 18:00:51 UTC
+--- kbfs/libkbfs/disk_limits_unix.go.orig	2026-03-02 19:53:34 UTC
 +++ kbfs/libkbfs/disk_limits_unix.go
-@@ -28,13 +28,13 @@ func getDiskLimits(path string) (
- 	}
+@@ -31,14 +31,14 @@ func getDiskLimits(path string) (
  
  	// Bavail is the free block count for an unprivileged user.
+ 	// #nosec G115 -- Bsize is typically uint32 or int64 depending on platform, conversion to uint64 is safe
 -	availableBytes = stat.Bavail * uint64(stat.Bsize)
 +	availableBytes = uint64(stat.Bavail) * uint64(stat.Bsize)
+ 	// #nosec G115 -- Bsize is typically uint32 or int64 depending on platform, conversion to uint64 is safe
  	totalBytes = stat.Blocks * uint64(stat.Bsize)
  	// Some filesystems, like btrfs, don't keep track of inodes.
  	// (See https://github.com/keybase/client/issues/6206 .) Use
  	// the total inode count to detect that case.
  	if stat.Files > 0 {
 -		availableFiles = stat.Ffree
 +		availableFiles = uint64(stat.Ffree)
  		totalFiles = stat.Files
  	} else {
  		availableFiles = math.MaxInt64