diff --git a/nixos/tests/os-prober.nix b/nixos/tests/os-prober.nix
index a7b955d44721..c1e29b0f68b4 100644
--- a/nixos/tests/os-prober.nix
+++ b/nixos/tests/os-prober.nix
@@ -53,12 +53,12 @@ let
   };
   # /etc/nixos/configuration.nix for the vm
   configFile = pkgs.writeText "configuration.nix"  ''
-    {config, pkgs, ...}: ({
+    {config, pkgs, lib, ...}: ({
     imports =
           [ ./hardware-configuration.nix
             <nixpkgs/nixos/modules/testing/test-instrumentation.nix>
           ];
-    } // pkgs.lib.importJSON ${
+    } // lib.importJSON ${
       pkgs.writeText "simpleConfig.json" (builtins.toJSON simpleConfig)
     })
   '';
@@ -114,7 +114,7 @@ in {
         "${configFile}",
         "/etc/nixos/configuration.nix",
     )
-    machine.succeed("nixos-rebuild boot >&2")
+    machine.succeed("nixos-rebuild boot --show-trace >&2")
 
     machine.succeed("egrep 'menuentry.*debian' /boot/grub/grub.cfg")
   '';
diff --git a/pkgs/tools/misc/os-prober/default.nix b/pkgs/tools/misc/os-prober/default.nix
index bc5dbe4672e8..7fdbbc1fae65 100644
--- a/pkgs/tools/misc/os-prober/default.nix
+++ b/pkgs/tools/misc/os-prober/default.nix
@@ -11,14 +11,14 @@ lvm2        # lvs
 }:
 
 stdenv.mkDerivation rec {
-  version = "1.78";
+  version = "1.79";
   pname = "os-prober";
   src = fetchFromGitLab {
     domain = "salsa.debian.org";
     owner = "installer-team";
     repo = pname;
     rev = version;
-    sha256 = "sha256-mfv1b40n/opXdyj6IXWVf/32sWlS+/DbXIRwE1zX4KM=";
+    sha256 = "sha256-ntwH5TIA18IOgYPkHMLU0EVykkHs6Z0wseYEPsU0KvQ=";
   };
 
   nativeBuildInputs = [ makeWrapper ];