diff --git a/default.nix b/default.nix
index 2b78de4..7ed51fe 100644
--- a/default.nix
+++ b/default.nix
@@ -52,6 +52,7 @@ in
     nnedi3_rpow2 = callPythonPackage ./plugins/nnedi3_rpow2 { };
     vsutil = callPythonPackage ./plugins/vsutil { };
 
+    havsfunc = callPythonPackage ./plugins/havsfunc { };
     mvsfunc = callPythonPackage ./plugins/mvsfunc { };
   };
 
diff --git a/plugins/havsfunc/default.nix b/plugins/havsfunc/default.nix
new file mode 100644
index 0000000..07df36a
--- /dev/null
+++ b/plugins/havsfunc/default.nix
@@ -0,0 +1,59 @@
+{ lib, buildPythonPackage, fetchFromGitHub, vapoursynthPlugins, python3, vapoursynth }:
+
+buildPythonPackage rec {
+  pname = "havsfunc";
+  version = "r33";
+
+  src = fetchFromGitHub {
+    owner = "HomeOfVapourSynthEvolution";
+    repo = pname;
+    rev = version;
+    sha256 = "14132gcy0zw348c40y2i8c7n3i1ygcnv9xrf83jp6m3b9v557z7p";
+  };
+
+  propagatedBuildInputs = with vapoursynthPlugins; [
+    addgrain
+    adjust
+    bm3d
+    cas
+    ctmf
+    dctfilter
+    deblock
+    dfttest
+    eedi2
+    eedi3m
+    fft3dfilter
+    fluxsmooth
+    fmtconv
+    fmtconv
+    hqdn3d
+    knlmeanscl
+    mvsfunc
+    mvtools
+    nnedi3
+    nnedi3cl
+    sangnom
+    ttempsmooth
+    znedi3
+  ];
+
+  format = "other";
+
+  installPhase = ''
+    install -D havsfunc.py $out/${python3.sitePackages}/havsfunc.py
+  '';
+
+  checkInputs = [ (vapoursynth.withPlugins propagatedBuildInputs) ];
+  checkPhase = ''
+    PYTHONPATH=$out/${python3.sitePackages}:$PYTHONPATH
+  '';
+  pythonImportsCheck = [ "havsfunc" ];
+
+  meta = with lib; {
+    description = "Holy’s ported AviSynth functions for VapourSynth";
+    homepage = "https://github.com/HomeOfVapourSynthEvolution/havsfunc";
+    license = licenses.unfree; # no license
+    maintainers = with maintainers; [ sbruder ];
+    platforms = platforms.all;
+  };
+}