diff --git a/pkgs/development/libraries/haskell/highlighting-kate/default.nix b/pkgs/development/libraries/haskell/highlighting-kate/default.nix
index a9540b249502..d77479ff0589 100644
--- a/pkgs/development/libraries/haskell/highlighting-kate/default.nix
+++ b/pkgs/development/libraries/haskell/highlighting-kate/default.nix
@@ -1,16 +1,19 @@
 # This file was auto-generated by cabal2nix. Please do NOT edit manually!
 
-{ cabal, blazeHtml, filepath, mtl, parsec, regexPcre, utf8String }:
+{ cabal, blazeHtml, Diff, filepath, mtl, parsec, regexPcre
+, utf8String
+}:
 
 cabal.mkDerivation (self: {
   pname = "highlighting-kate";
-  version = "0.5.8.5";
-  sha256 = "0xynbxffjp44189zzqx30wabbrj83mvjl3mj1i5lag1h945yp1nk";
+  version = "0.5.9";
+  sha256 = "025j6d97nwjhhyhdz7bsfhzgpb1ld28va4r8yv7zfh1dvczs6lkr";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [
     blazeHtml filepath mtl parsec regexPcre utf8String
   ];
+  testDepends = [ blazeHtml Diff filepath ];
   prePatch = "sed -i -e 's|regex-pcre-builtin >= .*|regex-pcre|' highlighting-kate.cabal";
   meta = {
     homepage = "http://github.com/jgm/highlighting-kate";