diff --git a/ports/llfio/fix-arm64-build.patch b/ports/llfio/fix-arm64-build.patch
new file mode 100644
index 00000000000000..09e73bf4a44b26
--- /dev/null
+++ b/ports/llfio/fix-arm64-build.patch
@@ -0,0 +1,13 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index b51a873..6705915 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -208,7 +208,7 @@ function(check_cxx_source_linkage prog var)
+   endif()
+   if(CMAKE_CXX_STANDARD)
+     if(MSVC)
+-      set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} /std:c++${CMAKE_CXX_STANDARD}")
++      set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} /std:c++${CMAKE_CXX_STANDARD} /MTd")
+     else()
+       set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -std=c++${CMAKE_CXX_STANDARD}")
+     endif()
diff --git a/ports/llfio/portfile.cmake b/ports/llfio/portfile.cmake
index f896ba23920d19..a26e8563091fa7 100644
--- a/ports/llfio/portfile.cmake
+++ b/ports/llfio/portfile.cmake
@@ -15,6 +15,7 @@ vcpkg_from_github(
         # https://github.com/ned14/llfio/issues/83
         # To be removed on next update
         issue-83-fix-backport.patch
+        fix-arm64-build.patch
 )
 
 vcpkg_from_github(
@@ -59,7 +60,6 @@ endif()
 
 vcpkg_cmake_configure(
     SOURCE_PATH "${SOURCE_PATH}"
-    PREFER_NINJA
     OPTIONS
         -DPROJECT_IS_DEPENDENCY=On
         -Dquickcpplib_DIR=${CURRENT_INSTALLED_DIR}/share/quickcpplib
diff --git a/ports/llfio/vcpkg.json b/ports/llfio/vcpkg.json
index d35443deb38b3f..745f398fd1bece 100644
--- a/ports/llfio/vcpkg.json
+++ b/ports/llfio/vcpkg.json
@@ -1,6 +1,7 @@
 {
   "name": "llfio",
   "version-string": "2.0-20220112",
+  "port-version": 1,
   "description": "P1031 low level file i/o and filesystem library for the C++ standard",
   "homepage": "https://github.com/ned14/llfio",
   "supports": "!uwp",
@@ -15,6 +16,9 @@
       "host": true
     }
   ],
+  "default-features": [
+    "cxx17"
+  ],
   "features": {
     "cxx17": {
       "description": "Do not polyfill C++17 entities",
diff --git a/versions/baseline.json b/versions/baseline.json
index d6057270247797..79d2d5c9865b94 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -4170,7 +4170,7 @@
     },
     "llfio": {
       "baseline": "2.0-20220112",
-      "port-version": 0
+      "port-version": 1
     },
     "llgl": {
       "baseline": "2019-08-15",
diff --git a/versions/l-/llfio.json b/versions/l-/llfio.json
index f2a4b5461d84e2..5eb09d95e2308c 100644
--- a/versions/l-/llfio.json
+++ b/versions/l-/llfio.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "64983838b051699afafbaaf552472431e21f11bb",
+      "version-string": "2.0-20220112",
+      "port-version": 1
+    },
     {
       "git-tree": "aaacb49264f3175de57367f28c90bd3904d7209f",
       "version-string": "2.0-20220112",