diff --git a/tests/nixos/github-flakes.nix b/tests/nixos/github-flakes.nix
index e4d34769180..6de702d17c3 100644
--- a/tests/nixos/github-flakes.nix
+++ b/tests/nixos/github-flakes.nix
@@ -82,7 +82,7 @@ let
       dir=NixOS-nixpkgs-${nixpkgs.shortRev}
       cp -prd ${nixpkgs} $dir
       # Set the correct timestamp in the tarball.
-      find $dir -print0 | xargs -0 touch -t ${builtins.substring 0 12 nixpkgs.lastModifiedDate}.${builtins.substring 12 2 nixpkgs.lastModifiedDate} --
+      find $dir -print0 | xargs -0 touch -h -t ${builtins.substring 0 12 nixpkgs.lastModifiedDate}.${builtins.substring 12 2 nixpkgs.lastModifiedDate} --
       tar cfz $out/archive/${nixpkgs.rev}.tar.gz $dir --hard-dereference
     '';
 in
diff --git a/tests/nixos/sourcehut-flakes.nix b/tests/nixos/sourcehut-flakes.nix
index a76fed0209f..6e8d884a01b 100644
--- a/tests/nixos/sourcehut-flakes.nix
+++ b/tests/nixos/sourcehut-flakes.nix
@@ -47,7 +47,7 @@ let
       cp -prd ${nixpkgs} $dir
 
       # Set the correct timestamp in the tarball.
-      find $dir -print0 | xargs -0 touch -t ${builtins.substring 0 12 nixpkgs.lastModifiedDate}.${builtins.substring 12 2 nixpkgs.lastModifiedDate} --
+      find $dir -print0 | xargs -0 touch -h -t ${builtins.substring 0 12 nixpkgs.lastModifiedDate}.${builtins.substring 12 2 nixpkgs.lastModifiedDate} --
 
       mkdir -p $out/archive
       tar cfz $out/archive/${nixpkgs.rev}.tar.gz $dir --hard-dereference
diff --git a/tests/nixos/tarball-flakes.nix b/tests/nixos/tarball-flakes.nix
index 1d43a5d04d2..e30d15739e6 100644
--- a/tests/nixos/tarball-flakes.nix
+++ b/tests/nixos/tarball-flakes.nix
@@ -11,7 +11,7 @@ let
       dir=nixpkgs-${nixpkgs.shortRev}
       cp -prd ${nixpkgs} $dir
       # Set the correct timestamp in the tarball.
-      find $dir -print0 | xargs -0 touch -t ${builtins.substring 0 12 nixpkgs.lastModifiedDate}.${builtins.substring 12 2 nixpkgs.lastModifiedDate} --
+      find $dir -print0 | xargs -0 touch -h -t ${builtins.substring 0 12 nixpkgs.lastModifiedDate}.${builtins.substring 12 2 nixpkgs.lastModifiedDate} --
       tar cfz $out/stable/${nixpkgs.rev}.tar.gz $dir --hard-dereference
 
       echo 'Redirect "/latest.tar.gz" "/stable/${nixpkgs.rev}.tar.gz"' > $out/.htaccess