diff --git a/pkgs/tools/misc/memtest86-efi/default.nix b/pkgs/tools/misc/memtest86-efi/default.nix
index dc29aad2a54..125f8f35acc 100644
--- a/pkgs/tools/misc/memtest86-efi/default.nix
+++ b/pkgs/tools/misc/memtest86-efi/default.nix
@@ -8,7 +8,7 @@
 
 stdenv.mkDerivation rec {
   pname = "memtest86-efi";
-  version = "8.3";
+  version = "8.4";
 
   src = fetchzip {
     # TODO: We're using the previous version of memtest86 because the
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
     # binaries that we make sure to version, then we could probably keep up
     # with the latest versions released by the company.
     url = "https://www.memtest86.com/downloads/memtest86-${version}-usb.zip";
-    sha256 = "0aldz7rvnfnzb4h447q10k9c9p5ghwzdyn7f6g5lrxiv5vxf3x96";
+    sha256 = "sha256-jh4FKCYZbOQhRv6B7N8Hmw6RQCQvbBGaGFTMLwM1nk8=";
     stripRoot = false;
   };
 
@@ -35,6 +35,8 @@ stdenv.mkDerivation rec {
   ];
 
   installPhase = ''
+    runHook preInstall
+
     # memtest86 is distributed as a bootable USB image.  It contains the actual
     # memtest86 EFI app.
     #
@@ -50,6 +52,8 @@ stdenv.mkDerivation rec {
     ')
     mkdir $out
     mcopy -vsi $IMG@@$ESP_OFFSET ::'/EFI/BOOT/*' $out/
+
+    runHook postInstall
   '';
 
   meta = with lib; {