diff --git a/ports/materialx/portfile.cmake b/ports/materialx/portfile.cmake
index f048ea6bf6..23c74b3649 100644
--- a/ports/materialx/portfile.cmake
+++ b/ports/materialx/portfile.cmake
@@ -2,7 +2,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO AcademySoftwareFoundation/MaterialX
     REF "v${VERSION}"
-    SHA512 64d5b989fdddfd9d1b21f9dccf914d2674a23c9fd9d24f121ff451ab333e359dc8ab253f72827d68cd2ed59b0c03a51818cc71aa2adf5adfe74eabe0fd58c682
+    SHA512 e527c2d160502b79edc33e801351d2d40b6419b853aa6b3e8c4a54787006baed236829ec8e4db32469daffec8bc1aa1ba35588a49d414fb38feee36fac7e3fb7
     HEAD_REF main
 )
 
diff --git a/ports/materialx/vcpkg.json b/ports/materialx/vcpkg.json
index 588a141b48..236a68d88c 100644
--- a/ports/materialx/vcpkg.json
+++ b/ports/materialx/vcpkg.json
@@ -1,7 +1,6 @@
 {
   "name": "materialx",
-  "version": "1.38.8",
-  "port-version": 1,
+  "version": "1.38.9",
   "description": "MaterialX is an open standard for the exchange of rich material and look-development content across applications and renderers.",
   "homepage": "https://www.materialx.org/",
   "license": "Apache-2.0",
diff --git a/versions/baseline.json b/versions/baseline.json
index 852e2919e5..8fd23a0656 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -5565,8 +5565,8 @@
       "port-version": 0
     },
     "materialx": {
-      "baseline": "1.38.8",
-      "port-version": 1
+      "baseline": "1.38.9",
+      "port-version": 0
     },
     "mathc": {
       "baseline": "2019-09-29",
diff --git a/versions/m-/materialx.json b/versions/m-/materialx.json
index dca7035050..129de5aa90 100644
--- a/versions/m-/materialx.json
+++ b/versions/m-/materialx.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "d2a74dccc02854ec1ef84d3ef6b4defcfeb2b0ea",
+      "version": "1.38.9",
+      "port-version": 0
+    },
     {
       "git-tree": "51acf72a500446d2a9d101be11fb24b86a1a18ad",
       "version": "1.38.8",