diff --git a/binutils-AMD-znver5.patch b/binutils-AMD-znver5.patch
index c52b7ca..c29f35f 100644
--- a/binutils-AMD-znver5.patch
+++ b/binutils-AMD-znver5.patch
@@ -156,3 +156,21 @@ diff -rupN binutils.orig/opcodes/i386-init.h binutils-2.40/opcodes/i386-init.h
  #define CPU_BTVER1_FLAGS \
    { { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, \
        0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
+--- binutils.orig/gas/testsuite/gas/i386/i386.exp	2024-02-22 12:25:43.212505914 +0000
++++ binutils-2.40/gas/testsuite/gas/i386/i386.exp	2024-02-22 12:28:26.254563823 +0000
+@@ -922,6 +922,7 @@ if [gas_64_check] then {
+     run_dump_test "x86-64-arch-4"
+     run_dump_test "x86-64-arch-4-1"
+     run_dump_test "rmpquery"
++    run_dump_test "x86-64-arch-5"
+     run_dump_test "x86-64-arch-2-lzcnt"
+     run_dump_test "x86-64-arch-2-prefetchw"
+     run_dump_test "x86-64-arch-2-bdver1"
+@@ -932,6 +933,7 @@ if [gas_64_check] then {
+     run_dump_test "x86-64-arch-3-znver2"
+     run_dump_test "x86-64-arch-4-znver3"
+     run_dump_test "x86-64-arch-4-znver4"
++    run_dump_test "x86-64-arch-5-znver5"
+     run_dump_test "x86-64-arch-2-btver1"
+     run_dump_test "x86-64-arch-2-btver2"
+     run_list_test "x86-64-arch-2-1" "-march=generic64 -I${srcdir}/$subdir -al"
diff --git a/binutils.spec b/binutils.spec
index 1b73dee..bd815b1 100644
--- a/binutils.spec
+++ b/binutils.spec
@@ -9,7 +9,7 @@ BuildRequires: scl-utils-build
 Summary: A GNU collection of binary utilities
 Name: %{?scl_prefix}binutils
 Version: 2.40
-Release: 20%{?dist}
+Release: 21%{?dist}
 License: GPLv3+
 URL: https://sourceware.org/binutils
 
@@ -1313,6 +1313,9 @@ exit 0
 
 #----------------------------------------------------------------------------
 %changelog
+* Thu Feb 22 2024 Nick Clifton  <nickc@redhat.com> - 2.40-21
+- Run x86_64 assembler tests for znver5 architecture extension.  (RHEL-23798)
+
 * Tue Feb 13 2024 Nick Clifton  <nickc@redhat.com> - 2.40-20
 - Add support for AMD's znver5 architecture extension.  (RHEL-23798)