diff --git a/OpenEXR.spec b/OpenEXR.spec
index b88df1dbd067eb2202fb01ed8a69bcb5bc2b73b8..40605b924cebc7fc33ebf251ba242c25290859f9 100644
--- a/OpenEXR.spec
+++ b/OpenEXR.spec
@@ -2,11 +2,11 @@
 
 Name:           OpenEXR
 Summary:        A high dynamic-range (HDR) image file format for use in computer imaging applications
-Version:        3.4.2
+Version:        3.4.3
 Release:        1
 License:        BSD-3-Clause
 URL:	        https://www.openexr.com/
-Source0:        https://github.com/AcademySoftwareFoundation/openexr/archive/v%{version}/openexr-%{version}.tar.gz
+Source0:        https://github.com/AcademySoftwareFoundation/openexr/releases/download/v%{version}/openexr-%{version}.tar.gz
 # for test images
 Source1:        https://github.com/AcademySoftwareFoundation/openexr-images/archive/refs/tags/v1.0.tar.gz
 BuildRequires:  gcc-c++ zlib-devel pkgconfig python3-devel
@@ -77,6 +77,9 @@ cp -fr openexr-images-1.0/* %{__cmake_builddir}/src/test/bin/
 %{_libdir}/pkgconfig/OpenEXR.pc
 
 %changelog
+* Thu Nov 06 2025 Funda Wang <fundawang@yeah.net> - 3.4.3-1
+- update to 3.4.3
+
 * Sun Nov 02 2025 Funda Wang <fundawang@yeah.net> - 3.4.2-1
 - update to 3.4.2
 
diff --git a/openexr-3.4.2.tar.gz b/openexr-3.4.3.tar.gz
similarity index 32%
rename from openexr-3.4.2.tar.gz
rename to openexr-3.4.3.tar.gz
index 5cd3460042cada6ac6000a6ab2d7851e11d4653d..ea7ab8df9adcaa0b037b285a4ef6148b394253e8 100644
--- a/openexr-3.4.2.tar.gz
+++ b/openexr-3.4.3.tar.gz
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:4246e9bbe706016b282e6503538e9a3ded72c67e6b25c4364d7571f04ce85a9a
-size 25545238
+oid sha256:db0c3f9a6bbfc6853d5ee21164ef151e616f07d6f2bac80339b3a0698d13fcc0
+size 25547346