diff --git a/oiio.spec b/oiio.spec
index e8285e3..3bc3bfd 100644
--- a/oiio.spec
+++ b/oiio.spec
@@ -1,6 +1,6 @@
 Name:          oiio
 Version:       2.5.6.0
-Release:       2mamba
+Release:       3mamba
 Summary:       Libraries and tools for VFX studios and developers of tools such as renderers, compositors, viewers
 Group:         Applications/Graphics
 Vendor:        openmamba
@@ -41,8 +41,8 @@ BuildRequires: libz-devel
 BuildRequires: pugixml-devel
 BuildRequires: qt6-qtbase-devel
 ## AUTOBUILDREQ-END
-BuildRequires: libopencolorio-devel >= 2.3.2-1mamba
-BuildRequires: libopencv-devel >= 4.5.5-1mamba
+BuildRequires: libopencv-devel >= 4.9.0-1mamba
+BuildRequires: libopencolorio-devel >= 1:2.3.2-1mamba
 BuildRequires: libdcmtk-devel >= 3.6.8
 BuildRequires: python-pybind11-devel
 BuildRequires: cmake
@@ -165,6 +165,9 @@ This package contains libraries and header files for developing applications tha
 %doc README.md
 
 %changelog
+* Wed Feb 28 2024 Automatic Build System <autodist@mambasoft.it> 2.5.6.0-3mamba
+- rebuilt by autoport with build requirements: libopencv-devel>=4.9.0-1mamba
+
 * Mon Feb 05 2024 Automatic Build System <autodist@mambasoft.it> 2.5.6.0-2mamba
 - rebuilt by autoport with build requirements: libopencolorio-devel>=2.3.2-1mamba