diff --git a/metropolis/node/BUILD.bazel b/metropolis/node/BUILD.bazel
index 8d5e644..893a481 100644
--- a/metropolis/node/BUILD.bazel
+++ b/metropolis/node/BUILD.bazel
@@ -119,6 +119,7 @@
 efi_unified_kernel_image(
     name = "kernel_efi",
     cmdline = "console=ttyS0,115200 console=tty0 quiet rootfstype=erofs init=/init",
+    initrd = [":ucode"],
     kernel = "//third_party/linux",
     os_release = ":os-release-info",
     verity = ":verity_rootfs",