diff --git a/Ports/AvailablePorts.md b/Ports/AvailablePorts.md
index 78677623ee..1fd78fa025 100644
--- a/Ports/AvailablePorts.md
+++ b/Ports/AvailablePorts.md
@@ -94,7 +94,7 @@ Please make sure to keep this list up to date when adding and updating ports. :^
 | [`libsodium`](libsodium/)              | libsodium                                                       | 1.0.18                   | https://doc.libsodium.org/                                                     |
 | [`libssh2`](libssh2/)                  | libssh2                                                         | 1.10.0                   | https://www.libssh2.org/                                                       |
 | [`libtheora`](libtheora/)              | libtheora                                                       | 1.1.1                    | https://www.theora.org/                                                        |
-| [`libtiff`](libtiff/)                  | libtiff                                                         | 4.2.0                    | http://www.libtiff.org/                                                        |
+| [`libtiff`](libtiff/)                  | libtiff                                                         | 4.3.0                    | http://www.libtiff.org/                                                        |
 | [`libtool`](libtool/)                  | libtool                                                         | 2.4                      | https://www.gnu.org/software/libtool/                                          |
 | [`libuuid`](libuuid/)                  | libuuid (from util-linux)                                       | 2.37.2                   | https://github.com/karelzak/util-linux/tree/master/libuuid                     |
 | [`libuv`](libuv/)                      | libuv                                                           | 1.42.0                   | https://github.com/libuv/libuv                                                 |
diff --git a/Ports/libtiff/package.sh b/Ports/libtiff/package.sh
index 79ab1a9d95..f6a638276e 100755
--- a/Ports/libtiff/package.sh
+++ b/Ports/libtiff/package.sh
@@ -1,12 +1,9 @@
 #!/usr/bin/env -S bash ../.port_include.sh
 port=tiff
-version=4.2.0
+version=4.3.0
 useconfigure=true
-files="http://download.osgeo.org/libtiff/tiff-${version}.tar.gz tiff-${version}.tar.gz
-http://download.osgeo.org/libtiff/tiff-${version}.tar.gz.sig tiff-${version}.tar.gz.sig"
-auth_type="sig"
-auth_import_key="EBDFDB21B020EE8FD151A88DE301047DE1198975"
-auth_opts=("tiff-${version}.tar.gz.sig" "tiff-${version}.tar.gz")
+files="http://download.osgeo.org/libtiff/tiff-${version}.tar.gz tiff-${version}.tar.gz 0e46e5acb087ce7d1ac53cf4f56a09b221537fc86dfc5daaad1c2e89e1b37ac8"
+auth_type="sha256"
 depends=("libjpeg" "zstd" "xz")
 
 install() {
diff --git a/Ports/libtiff/patches/system-detect.patch b/Ports/libtiff/patches/system-detect.patch
deleted file mode 100644
index 2feb9db5c1..0000000000
--- a/Ports/libtiff/patches/system-detect.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- tiff-4.2.0/config/config.sub.orig	2021-02-16 23:55:55.240259207 +0000
-+++ tiff-4.2.0/config/config.sub	2021-02-16 23:55:59.792227377 +0000
-@@ -1393,7 +1393,7 @@
- 	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
- 	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
- 	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
--	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* | -tirtos*)
-+	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* | -tirtos* | -serenity* )
- 	# Remember, each alternative MUST END IN *, to match a version number.
- 		;;
- 	-qnx*)