diff --git a/pscheduler-tool-iperf2/iperf2/unibuild-packaging/rpm/pscheduler-tool-iperf2.spec b/pscheduler-tool-iperf2/iperf2/unibuild-packaging/rpm/pscheduler-tool-iperf2.spec
index dacb7d070..bd5746b76 100644
--- a/pscheduler-tool-iperf2/iperf2/unibuild-packaging/rpm/pscheduler-tool-iperf2.spec
+++ b/pscheduler-tool-iperf2/iperf2/unibuild-packaging/rpm/pscheduler-tool-iperf2.spec
@@ -23,7 +23,10 @@ Provides:	%{name} = %{version}-%{release}
 Requires:	pscheduler-server >= 4.3.0
 Requires:	%{_pscheduler_python}-pscheduler >= 4.3.0
 Requires:	pscheduler-test-throughput
-requires:	iperf >= 2.1.9
+Requires:	iperf >= 2.1.9
+%if 0%{?el9}
+Requires:	kernel-modules-extra
+%endif
 Requires:	rpm-post-wrapper
 
 BuildRequires:	pscheduler-rpm
diff --git a/pscheduler-tool-iperf3/iperf3/unibuild-packaging/rpm/pscheduler-tool-iperf3.spec b/pscheduler-tool-iperf3/iperf3/unibuild-packaging/rpm/pscheduler-tool-iperf3.spec
index 346c4216a..34010ddaf 100644
--- a/pscheduler-tool-iperf3/iperf3/unibuild-packaging/rpm/pscheduler-tool-iperf3.spec
+++ b/pscheduler-tool-iperf3/iperf3/unibuild-packaging/rpm/pscheduler-tool-iperf3.spec
@@ -25,7 +25,10 @@ Requires:	%{_pscheduler_python}-pscheduler >= 4.4.1
 Requires:	%{_pscheduler_python}-cryptography
 Requires:	%{_pscheduler_python}-packaging
 Requires:	pscheduler-test-throughput
-requires:	iperf3 >= 3.17.1
+Requires:	iperf3 >= 3.17.1
+%if 0%{?el9}
+Requires:	kernel-modules-extra
+%endif
 Requires:	numactl
 Requires:	rpm-post-wrapper