diff --git a/pkgs/tools/typesetting/asciidoctorj/default.nix b/pkgs/tools/typesetting/asciidoctorj/default.nix
index 80872b0fdff0..3d02278ddc56 100644
--- a/pkgs/tools/typesetting/asciidoctorj/default.nix
+++ b/pkgs/tools/typesetting/asciidoctorj/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "asciidoctorj";
-  version = "2.5.5";
+  version = "2.5.6";
 
   src = fetchzip {
     url = "mirror://maven/org/asciidoctor/${pname}/${version}/${pname}-${version}-bin.zip";
-    sha256 = "sha256-0MWZKT4TkgNEJPP0HRc316P2AFeZ2gh+mu30X0y3Otc=";
+    sha256 = "sha256-oAakldNmSWMAgbHRZm9jY9QRFdQamrAsDyD0havivr0=";
   };
 
   nativeBuildInputs = [ makeWrapper ];