diff --git a/OpenEXR.spec b/OpenEXR.spec
index 4677f4b7e2fae16331b45e6214c0acab28ccb726..560066e616d7fb85cda2713feedc867226b70e33 100644
--- a/OpenEXR.spec
+++ b/OpenEXR.spec
@@ -1,10 +1,13 @@
 Name:           OpenEXR
 Summary:        A high dynamic-range (HDR) image file format for use in computer imaging applications
 Version:        3.1.5
-Release:        2
+Release:        3
 License:        BSD-3-Clause
 URL:	        http://www.openexr.com/
 Source0:        https://github.com/AcademySoftwareFoundation/openexr/archive/v%{version}/openexr-%{version}.tar.gz
+
+Patch0000: backport-fix-Bazel-Imath-version-defines-1256.patch
+
 BuildRequires:  gcc-c++ zlib-devel pkgconfig python3-devel
 BuildRequires:  cmake gcc boost-devel pkgconfig(Imath) 
 
@@ -68,6 +71,9 @@ This package contains libraries and header files for development of %{name}.
 %{_libdir}/pkgconfig/OpenEXR.pc
 
 %changelog
+* Thu Dec 29 2022 yaoguangzhong <yaoguangzhong@xfusion.com> - 3.1.5-3
+- backport fix Bazel Imath version defines
+
 * Tue May 10 2022 Ge Wang <wangge20@h-partners.com> - 3.1.5-2
 - license compliance rectification
 
diff --git a/backport-fix-Bazel-Imath-version-defines-1256.patch b/backport-fix-Bazel-Imath-version-defines-1256.patch
new file mode 100644
index 0000000000000000000000000000000000000000..c131b548596784762e2a0e8578b54e6d171be654
--- /dev/null
+++ b/backport-fix-Bazel-Imath-version-defines-1256.patch
@@ -0,0 +1,67 @@
+From ea51ede26f3be8df7021204dc827d236aaf08187 Mon Sep 17 00:00:00 2001
+From: Vertexwahn <julian.amann@tum.de>
+Date: Tue, 3 May 2022 02:43:31 +0200
+Subject: [PATCH] Fix Bazel Imath version defines (#1256)
+
+Signed-off-by: Julian Amann <julian.amann@bmw.de>
+---
+ .bazelversion                     | 2 +-
+ .github/workflows/bazel_build.yml | 4 ++--
+ bazel/third_party/Imath.BUILD     | 8 ++++----
+ 3 files changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/.bazelversion b/.bazelversion
+index 831446cb..ac14c3df 100644
+--- a/.bazelversion
++++ b/.bazelversion
+@@ -1 +1 @@
+-5.1.0
++5.1.1
+diff --git a/.github/workflows/bazel_build.yml b/.github/workflows/bazel_build.yml
+index 52876178..f5406fb8 100644
+--- a/.github/workflows/bazel_build.yml
++++ b/.github/workflows/bazel_build.yml
+@@ -34,7 +34,7 @@ jobs:
+     steps:
+     - uses: actions/checkout@v3
+ 
+-    - name: Mount bazel cache
++    - name: Mount Bazel cache
+       uses: actions/cache@v2
+       with:
+         path: "/home/runner/.cache/bazel"
+@@ -51,7 +51,7 @@ jobs:
+     steps:
+     - uses: actions/checkout@v3
+ 
+-    - name: Mount bazel cache
++    - name: Mount Bazel cache
+       uses: actions/cache@v2
+       with:
+         path: "/home/runner/.cache/bazel"
+diff --git a/bazel/third_party/Imath.BUILD b/bazel/third_party/Imath.BUILD
+index 6e483138..f3d8bda3 100644
+--- a/bazel/third_party/Imath.BUILD
++++ b/bazel/third_party/Imath.BUILD
+@@ -7,14 +7,14 @@ generate_header(
+     name = "ImathConfig.h",
+     substitutions = {
+         "@IMATH_INTERNAL_NAMESPACE@": "Imath_3_1",
+-        "@IMATH_LIB_VERSION@": "3.1.4",
++        "@IMATH_LIB_VERSION@": "3.1.5",
+         "@IMATH_NAMESPACE_CUSTOM@": "0",
+         "@IMATH_NAMESPACE@": "Imath",
+-        "@IMATH_PACKAGE_NAME@": "Imath 3.1.4",
++        "@IMATH_PACKAGE_NAME@": "Imath 3.1.5",
+         "@IMATH_VERSION_MAJOR@": "3",
+         "@IMATH_VERSION_MINOR@": "1",
+-        "@IMATH_VERSION_PATCH@": "4",
+-        "@IMATH_VERSION@": "3.1.4",
++        "@IMATH_VERSION_PATCH@": "5",
++        "@IMATH_VERSION@": "3.1.5",
+         "#cmakedefine IMATH_HALF_USE_LOOKUP_TABLE": "#define IMATH_HALF_USE_LOOKUP_TABLE",
+         "#cmakedefine IMATH_ENABLE_API_VISIBILITY": "#define IMATH_ENABLE_API_VISIBILITY",
+         "#cmakedefine IMATH_HAVE_LARGE_STACK": "/* #undef IMATH_HAVE_LARGE_STACK */",
+-- 
+2.27.0
+