diff --git a/pkgs/tools/backup/btrbk/default.nix b/pkgs/tools/backup/btrbk/default.nix
index dfa28203dbf2..91809af415a3 100644
--- a/pkgs/tools/backup/btrbk/default.nix
+++ b/pkgs/tools/backup/btrbk/default.nix
@@ -1,16 +1,16 @@
 { stdenv, fetchurl, coreutils, bash, btrfs-progs, openssh, perl, perlPackages
-, utillinux, asciidoc, makeWrapper }:
+, utillinux, asciidoc, asciidoctor, makeWrapper }:
 
 stdenv.mkDerivation rec {
   name = "btrbk-${version}";
-  version = "0.28.0";
+  version = "0.28.3";
 
   src = fetchurl {
     url = "https://digint.ch/download/btrbk/releases/${name}.tar.xz";
-    sha256 = "1bqgcbkdd5s3l3ba1ifa9l523r8cr5y3arjdy9f6rmm840kn7xzf";
+    sha256 = "0s69pcjkjxg77cgyjahwyg2w81ckgzwz1ds4ifjw7z0zhjxy7miz";
   };
 
-  nativeBuildInputs = [ asciidoc makeWrapper ];
+  nativeBuildInputs = [ asciidoc asciidoctor makeWrapper ];
 
   buildInputs = with perlPackages; [ perl DateCalc ];