diff --git a/ports/spdlog/portfile.cmake b/ports/spdlog/portfile.cmake
index 0d95db43a76aab..1943ad86d77cf7 100644
--- a/ports/spdlog/portfile.cmake
+++ b/ports/spdlog/portfile.cmake
@@ -9,9 +9,22 @@ vcpkg_from_github(
 
 vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
     FEATURES
-	benchmark SPDLOG_BUILD_BENCH
+        benchmark       SPDLOG_BUILD_BENCH
+        wchar           SPDLOG_WCHAR_SUPPORT
 )
 
+# configured in triplet file
+if(NOT DEFINED SPDLOG_WCHAR_FILENAMES)
+    set(SPDLOG_WCHAR_FILENAMES OFF)
+endif()
+if(NOT VCPKG_TARGET_IS_WINDOWS)
+    if("wchar" IN_LIST FEATURES)
+        message(WARNING "Feature 'wchar' is only supported for Windows and has no effect on other platforms.")
+    elseif(SPDLOG_WCHAR_FILENAMES) 
+        message(FATAL_ERROR "Build option 'SPDLOG_WCHAR_FILENAMES' is for Windows.")
+    endif()
+endif()
+
 string(COMPARE EQUAL "${VCPKG_LIBRARY_LINKAGE}" "dynamic" SPDLOG_BUILD_SHARED)
 
 vcpkg_cmake_configure(
@@ -21,6 +34,7 @@ vcpkg_cmake_configure(
         -DSPDLOG_FMT_EXTERNAL=ON
         -DSPDLOG_INSTALL=ON
         -DSPDLOG_BUILD_SHARED=${SPDLOG_BUILD_SHARED}
+        -DSPDLOG_WCHAR_FILENAMES=${SPDLOG_WCHAR_FILENAMES}
         -DSPDLOG_BUILD_EXAMPLE=OFF
 )
 
diff --git a/ports/spdlog/vcpkg.json b/ports/spdlog/vcpkg.json
index 21f33d83defaac..ec5df5609a499c 100644
--- a/ports/spdlog/vcpkg.json
+++ b/ports/spdlog/vcpkg.json
@@ -1,9 +1,10 @@
 {
   "name": "spdlog",
   "version-semver": "1.8.5",
-  "port-version": 3,
+  "port-version": 4,
   "description": "Very fast, header only, C++ logging library",
   "homepage": "https://github.com/gabime/spdlog",
+  "license": "MIT",
   "dependencies": [
     "fmt",
     {
@@ -21,6 +22,9 @@
       "dependencies": [
         "benchmark"
       ]
+    },
+    "wchar": {
+      "description": "Build with wchar_t (Windows only)"
     }
   }
 }
diff --git a/versions/baseline.json b/versions/baseline.json
index aca0b3c8179b9e..960471aae6d382 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -5946,7 +5946,7 @@
     },
     "spdlog": {
       "baseline": "1.8.5",
-      "port-version": 3
+      "port-version": 4
     },
     "spectra": {
       "baseline": "0.9.0",
diff --git a/versions/s-/spdlog.json b/versions/s-/spdlog.json
index f0dd94172b7e08..1c0c72dae5822e 100644
--- a/versions/s-/spdlog.json
+++ b/versions/s-/spdlog.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "ac601a8d86ea3edc831933ad7e12eee11ac6e6db",
+      "version-semver": "1.8.5",
+      "port-version": 4
+    },
     {
       "git-tree": "f74643a7b8056237da08c41a653f5b0592870906",
       "version-semver": "1.8.5",