diff --git a/kernel-tools.spec b/kernel-tools.spec
index 0d1e551..1510ea9 100644
--- a/kernel-tools.spec
+++ b/kernel-tools.spec
@@ -34,7 +34,7 @@
 %global upstream_sublevel %(echo $((%{base_sublevel} + 1)))
 
 # The rc snapshot level
-%global rcrev 2
+%global rcrev 4
 # Set rpm version accordingly
 %global rpmversion 5.%{upstream_sublevel}.0
 %endif
@@ -106,6 +106,7 @@ Source5000: patch-5.%{upstream_sublevel}-rc%{rcrev}.xz
 
 # ongoing complaint, full discussion delayed until ksummit/plumbers
 Patch0: 0001-iio-Use-event-header-from-kernel-tree.patch
+Patch1: 0001-Filter-lto-options-from-the-perl-ccopts.patch
 
 # rpmlint cleanup
 Patch6: 0002-perf-Don-t-make-sourced-script-executable.patch
@@ -215,6 +216,7 @@ cd linux-%{kversion}
 %endif
 
 %patch0 -p1
+%patch1 -p1
 %patch6 -p1
 
 # END OF PATCH APPLICATIONS
@@ -520,6 +522,12 @@ popd
 %license linux-%{kversion}/COPYING
 
 %changelog
+* Thu Sep 10 11:29:45 CDT 2020 Justin M. Forbes <jforbes@fedoraproject.org> - 5.9.0-0.rc4.git0.1
+- Linux v5.9-rc4
+
+* Mon Aug 31 2020 Justin M. Forbes <jforbes@fedoraproject.org> - 5.9.0-0.rc3.git0.1
+- Linux v5.9-rc3
+
 * Tue Aug 25 2020 Justin M. Forbes <jforbes@fedoraproject.org> - 5.9.0-0.rc2.git0.1
 - Linux v5.9-rc2
 
diff --git a/sources b/sources
index e84a044..d5f4386 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
 SHA512 (linux-5.8.tar.xz) = 45a53ecf351096ef6e98242cca4228b8da9b9139ecc6963695791ea6fb7a9484a4e1c19dcca7ce7cbfdfa49de0451b70973bb078f12bdae9cbaddbc3f8092556
-SHA512 (patch-5.9-rc2.xz) = ad51ea1bf8c7fbf08e5077aa5f96ca033d3a496bc3dd385ce1d6026dff7de80f3b1520d0d4598364ff02773abb64836e2a0a4237459f0ab498bf2c29c0bfadf5
+SHA512 (patch-5.9-rc4.xz) = 968d236e5299a1c780a7defc76b59a3a9f9d6648bf90becf3f91e0c76e84a244516de326b1fe3e7bcce457fe3fa19d187ec7d5836a8f89a255c0f6bb13ae9c44