diff --git a/ports/libsm/missing-include.patch b/ports/libsm/missing-include.patch
deleted file mode 100644
index f4f4358f4e..0000000000
--- a/ports/libsm/missing-include.patch
+++ /dev/null
@@ -1,14 +0,0 @@
-diff --git a/src/sm_genid.c b/src/sm_genid.c
-index 3726eb1d2..082ce89fe 100644
---- a/src/sm_genid.c
-+++ b/src/sm_genid.c
-@@ -90,6 +90,9 @@ in this Software without prior written authorization from The Open Group.
- # define X_INCLUDE_NETDB_H
- # define XOS_USE_MTSAFE_NETDBAPI
- # include <X11/Xos_r.h>
-+# ifdef _MSC_VER
-+#  include <process.h>
-+# endif
- 
- #endif /* WIN32 */
- 
diff --git a/ports/libsm/msvc.patch b/ports/libsm/msvc.patch
new file mode 100644
index 0000000000..db5bd58b23
--- /dev/null
+++ b/ports/libsm/msvc.patch
@@ -0,0 +1,15 @@
+diff --git a/src/sm_genid.c b/src/sm_genid.c
+index 9a52e1d..3a7d1e4 100644
+--- a/src/sm_genid.c
++++ b/src/sm_genid.c
+@@ -64,7 +64,9 @@ in this Software without prior written authorization from The Open Group.
+ # include <X11/Xthreads.h>
+ #endif
+ #include <stdio.h>
+-#include <unistd.h>
++#ifdef HAVE_UNISTD_H
++ #include <unistd.h>
++#endif
+ 
+ #include <time.h>
+ #define Time_t time_t
diff --git a/ports/libsm/portfile.cmake b/ports/libsm/portfile.cmake
index 16f95e1156..254ae432a6 100644
--- a/ports/libsm/portfile.cmake
+++ b/ports/libsm/portfile.cmake
@@ -1,18 +1,22 @@
 if(NOT X_VCPKG_FORCE_VCPKG_X_LIBRARIES AND NOT VCPKG_TARGET_IS_WINDOWS)
     message(STATUS "Utils and libraries provided by '${PORT}' should be provided by your system! Install the required packages or force vcpkg libraries by setting X_VCPKG_FORCE_VCPKG_X_LIBRARIES in your triplet!")
     set(VCPKG_POLICY_EMPTY_PACKAGE enabled)
-else()
+    return()
+endif()
 
-vcpkg_from_gitlab(
-    GITLAB_URL https://gitlab.freedesktop.org/xorg
-    OUT_SOURCE_PATH SOURCE_PATH
-    REPO lib/libsm
-    REF a52c79544fcd6b5e2242b9122dfaa34be07aebb2 # 1.2.3
-    SHA512  379e450d90e61d80d4fea8449a582b3eee3968bef137022053cb3bd51fa2815d8fccc43ff11e3b593c4a67ad64e93209c25111a20ac88e38c1f663cd274f5d56
-    HEAD_REF master
-    PATCHES windows.patch
-            missing-include.patch # avoids: warning C4013: '_getpid' undefined; assuming extern returning int
-) 
+vcpkg_download_distfile(
+    LIBSM_ARCHIVE
+    URLS "https://www.x.org/releases/individual/lib/libSM-${VERSION}.tar.xz"
+    FILENAME "libSM-${VERSION}.tar.xz"
+    SHA512 e544a1dc49a03390f76af35837bfd01f749b806d88d3ee806f20311c47ff53d0aeea4744feb875958031b17d50b57a89dcc41d81241c09333c88b268c44653a7
+)
+
+vcpkg_extract_source_archive(
+    SOURCE_PATH
+    ARCHIVE "${LIBSM_ARCHIVE}"
+    PATCHES
+        msvc.patch
+)
 
 set(ENV{ACLOCAL} "aclocal -I \"${CURRENT_INSTALLED_DIR}/share/xorg/aclocal/\"")
 
@@ -24,9 +28,6 @@ vcpkg_configure_make(
 vcpkg_install_make()
 vcpkg_fixup_pkgconfig()
 
-file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")
 file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/share")
 
-# Handle copyright
-file(INSTALL "${SOURCE_PATH}/COPYING" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}" RENAME copyright)
-endif()
+vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/COPYING")
diff --git a/ports/libsm/vcpkg.json b/ports/libsm/vcpkg.json
index 1881bd7c04..aa5750ed8c 100644
--- a/ports/libsm/vcpkg.json
+++ b/ports/libsm/vcpkg.json
@@ -1,12 +1,10 @@
 {
   "name": "libsm",
-  "version": "1.2.3",
-  "port-version": 1,
+  "version": "1.2.6",
   "description": "X Session Management Library",
   "homepage": "https://gitlab.freedesktop.org/xorg/lib/libsm",
   "license": null,
   "dependencies": [
-    "bzip2",
     "libice",
     "xorg-macros"
   ]
diff --git a/ports/libsm/windows.patch b/ports/libsm/windows.patch
deleted file mode 100644
index abf52cb634..0000000000
--- a/ports/libsm/windows.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-diff --git a/src/sm_genid.c b/src/sm_genid.c
-index 1a8b9a0ed..3726eb1d2 100644
---- a/src/sm_genid.c
-+++ b/src/sm_genid.c
-@@ -64,7 +64,9 @@ in this Software without prior written authorization from The Open Group.
- # include <X11/Xthreads.h>
- #endif
- #include <stdio.h>
-+#ifdef HAVE_UNISTD_H
- #include <unistd.h>
-+#endif
- 
- #include <time.h>
- #define Time_t time_t
-@@ -84,6 +86,7 @@ in this Software without prior written authorization from The Open Group.
- 
- # include <X11/Xwinsock.h>
- # include <X11/Xw32defs.h>
-+# include <ws2ipdef.h>
- # define X_INCLUDE_NETDB_H
- # define XOS_USE_MTSAFE_NETDBAPI
- # include <X11/Xos_r.h>
diff --git a/versions/baseline.json b/versions/baseline.json
index 0d7bac88a7..3dac3c412f 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -5481,8 +5481,8 @@
       "port-version": 0
     },
     "libsm": {
-      "baseline": "1.2.3",
-      "port-version": 1
+      "baseline": "1.2.6",
+      "port-version": 0
     },
     "libsmacker": {
       "baseline": "1.2.0",
diff --git a/versions/l-/libsm.json b/versions/l-/libsm.json
index d479d742db..b0b56c875b 100644
--- a/versions/l-/libsm.json
+++ b/versions/l-/libsm.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "1f5f66df60503d768647fac0cfe99f1102598979",
+      "version": "1.2.6",
+      "port-version": 0
+    },
     {
       "git-tree": "c6104db124805dd5c763dc15cbaed0e42254241c",
       "version": "1.2.3",