diff --git a/ports/openimageio/fix-msvc-build.patch b/ports/openimageio/fix-msvc-build.patch
deleted file mode 100644
index 0643adf94b..0000000000
--- a/ports/openimageio/fix-msvc-build.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/src/python/py_oiio.cpp b/src/python/py_oiio.cpp
-index 6031d2c23..e71105da5 100644
---- a/src/python/py_oiio.cpp
-+++ b/src/python/py_oiio.cpp
-@@ -153,7 +153,7 @@ oiio_bufinfo::oiio_bufinfo(const py::buffer_info& pybuf, int nchans, int width,
-             format = TypeUnknown;  // No idea what's going on -- error
-             error  = Strutil::fmt::format(
-                 "Python array shape is [{:,}] but expecting h={}, w={}, ch={}",
--                cspan<ssize_t>(pybuf.shape), height, width, nchans);
-+                cspan<py::ssize_t>(pybuf.shape), height, width, nchans);
-         }
-     } else if (pixeldims == 1) {
-         // Reading a 1D scanline span
diff --git a/ports/openimageio/portfile.cmake b/ports/openimageio/portfile.cmake
index 2fb3851231..78a7aad113 100644
--- a/ports/openimageio/portfile.cmake
+++ b/ports/openimageio/portfile.cmake
@@ -2,7 +2,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO OpenImageIO/oiio
     REF "v${VERSION}"
-    SHA512 e8b232bb3c1bb66cc6c4f023dcf6e29633a1aee64c49a2860c2157c0885960c40114ee3988d4f132e6e55670b8b1e01b5b4cd4462651ae047a89d22de527581c 
+    SHA512 9325beefce55b66a58fcfc2ce93e1406558ed5f6cc37cb1e8e04aee470c4f30a14483bebfb311c329f7868afb6c508a052661c6b12d819a69f707c1a30cd9549 
     HEAD_REF master
     PATCHES
         fix-dependencies.patch
@@ -11,7 +11,6 @@ vcpkg_from_github(
         imath-version-guard.patch
         fix-openimageio_include_dir.patch
         fix-openexr-target-missing.patch
-        fix-msvc-build.patch
 )
 
 file(REMOVE_RECURSE "${SOURCE_PATH}/ext")
diff --git a/ports/openimageio/vcpkg.json b/ports/openimageio/vcpkg.json
index 7283dcbce4..c76049d4a7 100644
--- a/ports/openimageio/vcpkg.json
+++ b/ports/openimageio/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "openimageio",
-  "version": "2.4.11.1",
+  "version": "2.4.13.0",
   "description": "A library for reading and writing images, and a bunch of related classes, utilities, and application.",
   "homepage": "https://github.com/OpenImageIO/oiio",
   "license": "BSD-3-Clause",
diff --git a/versions/baseline.json b/versions/baseline.json
index 7e4397e3fe..7ec0258412 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -6037,7 +6037,7 @@
       "port-version": 4
     },
     "openimageio": {
-      "baseline": "2.4.11.1",
+      "baseline": "2.4.13.0",
       "port-version": 0
     },
     "openjpeg": {
diff --git a/versions/o-/openimageio.json b/versions/o-/openimageio.json
index ccf0a9de9e..6ad6ba5c30 100644
--- a/versions/o-/openimageio.json
+++ b/versions/o-/openimageio.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "1d6d564f1848ae68ece423fa0597c8a5fe6c9d5d",
+      "version": "2.4.13.0",
+      "port-version": 0
+    },
     {
       "git-tree": "7c06030b088b87143ff7a85c23af606bbd967496",
       "version": "2.4.11.1",