diff --git a/ospray.spec b/ospray.spec
index ef642a8..2beac20 100644
--- a/ospray.spec
+++ b/ospray.spec
@@ -1,6 +1,6 @@
 Name:          ospray
 Version:       3.1.0
-Release:       2mamba
+Release:       3mamba
 Summary:       An Open, Scalable, Portable, Ray Tracing Based Rendering Engine for High-Fidelity Visualization
 Group:         System/Libraries
 Vendor:        openmamba
@@ -23,6 +23,7 @@ BuildRequires: libsnappy-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libtbb-devel
 ## AUTOBUILDREQ-END
+BuildRequires: libbenchmark-devel >= 0:1.8.4-1mamba
 BuildRequires: cmake
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
 
@@ -111,6 +112,9 @@ rm -f %{buildroot}%{_bindir}/{ospTestSuite,ospMPIDistribTestSuite}
 %doc README.md
 
 %changelog
+* Thu Jun 06 2024 Automatic Build System <autodist@mambasoft.it> 3.1.0-3mamba
+- rebuilt by autoport with build requirements: libbenchmark-devel>=0:1.8.4-1mamba
+
 * Mon May 06 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 3.1.0-2mamba
 - rebuilt with more build options