diff --git a/ports/spdlog/portfile.cmake b/ports/spdlog/portfile.cmake
index ea8bbbe71f..371874f005 100644
--- a/ports/spdlog/portfile.cmake
+++ b/ports/spdlog/portfile.cmake
@@ -2,7 +2,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO gabime/spdlog
     REF "v${VERSION}"
-    SHA512 4e86d79dea4f08b9e4755ada7c9395e03246d00cdc11df8951d32b5f5e823fec103091d11154f32b261a29574784b761efb32477ec6385ffdb2069413e2c91a0
+    SHA512 21c35f4091850ea3a0cd6a24867e06e943df70d76cd5a7ec0b15a33e0e9e0cc3584ed7930e1ac6f347e7e06f0e002d0e759884eaf05310014e24ea0e0419fcc4
     HEAD_REF v1.x
 )
 
diff --git a/ports/spdlog/vcpkg.json b/ports/spdlog/vcpkg.json
index 5fdc40c0e5..4327f1b963 100644
--- a/ports/spdlog/vcpkg.json
+++ b/ports/spdlog/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "spdlog",
-  "version-semver": "1.15.2",
+  "version-semver": "1.15.3",
   "description": "Very fast, header-only/compiled, C++ logging library.",
   "homepage": "https://github.com/gabime/spdlog",
   "license": "MIT",
diff --git a/versions/baseline.json b/versions/baseline.json
index 3a75e4a119..de61d480dd 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -8873,7 +8873,7 @@
       "port-version": 3
     },
     "spdlog": {
-      "baseline": "1.15.2",
+      "baseline": "1.15.3",
       "port-version": 0
     },
     "spectra": {
diff --git a/versions/s-/spdlog.json b/versions/s-/spdlog.json
index 329b6f4e1f..0d55404630 100644
--- a/versions/s-/spdlog.json
+++ b/versions/s-/spdlog.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "c2b47286b0759373acecdfaa3be4219711f6d059",
+      "version-semver": "1.15.3",
+      "port-version": 0
+    },
     {
       "git-tree": "a79acb592ce2c572c91f6a695fa1e6899d9a1d5f",
       "version-semver": "1.15.2",