diff --git a/ports/imath/portfile.cmake b/ports/imath/portfile.cmake
index ca245a1cbaa0e1..e8e38f8be58c20 100644
--- a/ports/imath/portfile.cmake
+++ b/ports/imath/portfile.cmake
@@ -1,8 +1,8 @@
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO AcademySoftwareFoundation/Imath
-    REF v3.1.3
-    SHA512 a11f5e736bc49098d735c7903f186c15b03efbec082a8cf2e6635546368035cec0d36c7ae64bfd01bd8eeffb2dd247b8dab19e440a3e1fe33008edacc1268f75
+    REF v3.1.5
+    SHA512 8344e42c75d8e4bb21facb837535f0c9e4a9489d9edebcc25d5d3c6063535f2bf54e4517d8fca3fedada248457aa07c9bd77d6e843a9d115278fc154de2cdc9d
     HEAD_REF master
 )
 
diff --git a/ports/imath/vcpkg.json b/ports/imath/vcpkg.json
index c8bc20ac6c9258..01ef7a9d6adee1 100644
--- a/ports/imath/vcpkg.json
+++ b/ports/imath/vcpkg.json
@@ -1,9 +1,9 @@
 {
   "name": "imath",
-  "version": "3.1.3",
-  "port-version": 1,
+  "version": "3.1.5",
   "description": "Imath is a C++ and Python library of 2D and 3D vector, matrix, and math operations for computer graphics.",
   "homepage": "https://github.com/AcademySoftwareFoundation/Imath",
+  "license": "BSD-3-Clause",
   "dependencies": [
     {
       "name": "vcpkg-cmake",
diff --git a/versions/baseline.json b/versions/baseline.json
index c7016f8bad5366..19969b2a82bd6a 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -2901,8 +2901,8 @@
       "port-version": 1
     },
     "imath": {
-      "baseline": "3.1.3",
-      "port-version": 1
+      "baseline": "3.1.5",
+      "port-version": 0
     },
     "imgui": {
       "baseline": "1.87",
diff --git a/versions/i-/imath.json b/versions/i-/imath.json
index 0053f4defc1202..f1385c4d11764e 100644
--- a/versions/i-/imath.json
+++ b/versions/i-/imath.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "e72149f2fce9434300bbdd84562ad7a58aa4ac90",
+      "version": "3.1.5",
+      "port-version": 0
+    },
     {
       "git-tree": "f8d9cbaa52114f1030e4bc9ee0e075da76d7be5c",
       "version": "3.1.3",