diff --git a/pkgs/applications/virtualization/rust-hypervisor-firmware/default.nix b/pkgs/applications/virtualization/rust-hypervisor-firmware/default.nix
index b7cd6f438661..89509aecf28a 100644
--- a/pkgs/applications/virtualization/rust-hypervisor-firmware/default.nix
+++ b/pkgs/applications/virtualization/rust-hypervisor-firmware/default.nix
@@ -29,16 +29,16 @@ in
 
 rustPlatform.buildRustPackage rec {
   pname = "rust-hypervisor-firmware";
-  version = "0.4.2";
+  version = "0.5.0";
 
   src = fetchFromGitHub {
     owner = "cloud-hypervisor";
-    repo = pname;
-    rev = version;
-    sha256 = "sha256-hKk5pcop8rb5Q+IVchcl+XhMc3DCBBPn5P+AkAb9XxI=";
+    repo = "rust-hypervisor-firmware";
+    tag = version;
+    sha256 = "sha256-iLYmPBJH7I6EJ8VTUbR0+lZaebvbZlRv2KglbjKX76Q=";
   };
 
-  cargoHash = "sha256-edi6/Md6KebKM3wHArZe1htUCg0/BqMVZKA4xEH25GI=";
+  cargoHash = "sha256-tNtTFYCH7Ww+Tfrxbn8uxIRBG341d77iPoEz+LY3BeU=";
 
   # lld: error: unknown argument '-Wl,--undefined=AUDITABLE_VERSION_INFO'
   # https://github.com/cloud-hypervisor/rust-hypervisor-firmware/issues/249
diff --git a/pkgs/applications/virtualization/rust-hypervisor-firmware/x86_64-unknown-none.json b/pkgs/applications/virtualization/rust-hypervisor-firmware/x86_64-unknown-none.json
index f42155ae32ee..dab5ec84bf1a 100644
--- a/pkgs/applications/virtualization/rust-hypervisor-firmware/x86_64-unknown-none.json
+++ b/pkgs/applications/virtualization/rust-hypervisor-firmware/x86_64-unknown-none.json
@@ -1,6 +1,6 @@
 {
   "llvm-target": "x86_64-unknown-none",
-  "data-layout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128",
+  "data-layout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128",
   "arch": "x86_64",
   "target-endian": "little",
   "target-pointer-width": "64",