diff --git a/macros b/macros
index e96b4e8..1574c5c 100644
--- a/macros
+++ b/macros
@@ -154,7 +154,8 @@ for k,_ in pairs(stripped_flags) do print(k .. " ") end
 # Also used for s390.
 %__cflags_arch_s390x %[0%{?rhel} >= 9 ? "-march=z14 -mtune=z15" : "-march=z13 -mtune=z14"]
 
-%__cflags_arch_ppc64le %[0%{?rhel} >= 9 ? "-mcpu=power9 -mtune=power9" : "-mcpu=power8 -mtune=power8"]
+%_ppc64le_tune_level %[0%{?rhel} >= 10 ? "-mtune=power10" : "-mtune=power9"]
+%__cflags_arch_ppc64le %[0%{?rhel} >= 9 ? "-mcpu=power9 %{_ppc64le_tune_level}" : "-mcpu=power8 -mtune=power8" ]
 
 #==============================================================================
 # ---- configure and makeinstall.
diff --git a/redhat-rpm-config.spec b/redhat-rpm-config.spec
index 39ad195..ca4aa85 100644
--- a/redhat-rpm-config.spec
+++ b/redhat-rpm-config.spec
@@ -4,7 +4,7 @@
 # 2) When making changes, increment the version (in baserelease) by 1.
 #    rpmdev-bumpspec and other tools update the macro below, which is used
 #    in Version: to get the desired effect.
-%global baserelease 285
+%global baserelease 286
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
@@ -259,6 +259,9 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora common.lua
 %doc buildflags.md
 
 %changelog
+* Wed Sep 25 2024 Siddhesh Poyarekar <siddhesh@redhat.com> - 286-1
+- Change ppc64le tuning to Power 10 for RHEL10 and beyond (RHEL-58074)
+
 * Mon Jun 24 2024 Troy Dawson <tdawson@redhat.com> - 285-1
 - Bump release for June 2024 mass rebuild