diff --git a/lib/std/Target.zig b/lib/std/Target.zig
index c8255f05030876e097d89b6a77f089d5dc30ddc8..e3ff81cd8ed51c4b165090cc021d8b1f0d90c918 100644
--- a/lib/std/Target.zig
+++ b/lib/std/Target.zig
@@ -2071,6 +2071,10 @@ pub const Cpu = struct {
                 .mips64, .mips64el => &mips.cpu.mips64r2,
                 .msp430 => &msp430.cpu.msp430,
                 .nvptx, .nvptx64 => &nvptx.cpu.sm_52,
+                .powerpc64 => switch (os.tag) {
+                    .openbsd => &powerpc.cpu.pwr9,
+                    else => generic(arch),
+                },
                 .powerpc64le => &powerpc.cpu.ppc64le,
                 .riscv32, .riscv32be => &riscv.cpu.baseline_rv32,
                 .riscv64, .riscv64be => &riscv.cpu.baseline_rv64,