diff --git a/anaconda/pyanaconda/bootloader.py b/anaconda/pyanaconda/bootloader.py
index 0b79a77..adc2e4b 100644
--- a/anaconda/pyanaconda/bootloader.py
+++ b/anaconda/pyanaconda/bootloader.py
@@ -1505,7 +1505,7 @@ class GRUB2(GRUB):
         # boot arguments
         log.info("bootloader.py: used boot args: %s ", self.boot_args)
         defaults.write("GRUB_CMDLINE_LINUX=\"%s\"\n" % self.boot_args)
-        defaults.write("GRUB_CMDLINE_XEN_DEFAULT=\"console=none dom0_mem=min:1024M dom0_mem=max:4096M\"\n")
+        defaults.write("GRUB_CMDLINE_XEN_DEFAULT=\"console=none dom0_mem=min:1024M dom0_mem=max:4096M ucode=scan\"\n")
         defaults.write("GRUB_DISABLE_RECOVERY=\"true\"\n")
         defaults.write("GRUB_THEME=\"/boot/grub2/themes/system/theme.txt\"\n")
         defaults.write("GRUB_DISABLE_OS_PROBER=\"true\"\n")
@@ -1859,7 +1859,7 @@ class XenEFI(EFIGRUB):
                 root_args += " rootflags=subvol=%s" % image.device.name
             config.write("\n")
             config.write("[{}]\n".format(image.version))
-            config.write("options=loglvl=all dom0_mem=min:1024M dom0_mem=max:4096M\n")
+            config.write("options=loglvl=all dom0_mem=min:1024M dom0_mem=max:4096M ucode=scan\n")
             config.write("kernel={} {} {}\n".format(
                 image.kernel,
                 root_args,