diff --git a/pkgs/applications/audio/CharacterCompressor/default.nix b/pkgs/applications/audio/CharacterCompressor/default.nix
index 5c28de3c60a7..8e50a6f1744d 100644
--- a/pkgs/applications/audio/CharacterCompressor/default.nix
+++ b/pkgs/applications/audio/CharacterCompressor/default.nix
@@ -1,27 +1,31 @@
 { stdenv, fetchFromGitHub, faust2jaqt, faust2lv2gui }:
 stdenv.mkDerivation rec {
   name = "CharacterCompressor-${version}";
-  version = "0.2";
+  version = "0.3.1";
 
   src = fetchFromGitHub {
     owner = "magnetophon";
     repo = "CharacterCompressor";
-    rev = "v${version}";
-    sha256 = "0fvi8m4nshcxypn4jgxhnh7pxp68wshhav3k8wn3il7qpw71pdxi";
+    rev = "V${version}";
+    sha256 = "0ci27v5k10prsmcd0g6q5vhr31mz8hsmrsdk436vfbcv3s108rcc";
   };
 
   buildInputs = [ faust2jaqt faust2lv2gui ];
 
   buildPhase = ''
-    faust2jaqt -t 99999 CharacterCompressor.dsp
-    faust2lv2 -gui -t 99999 CharacterCompressor.dsp
+    faust2jaqt -vec -time -t 99999 CharacterCompressor.dsp
+    faust2lv2 -vec -time -gui -t 99999 CharacterCompressor.dsp
+    faust2jaqt -vec -time -t 99999 CharacterCompressorMono.dsp
+    faust2lv2 -vec -time -gui -t 99999 CharacterCompressorMono.dsp
   '';
 
   installPhase = ''
     mkdir -p $out/bin
     cp CharacterCompressor $out/bin/
+    cp CharacterCompressorMono $out/bin/
     mkdir -p $out/lib/lv2
     cp -r CharacterCompressor.lv2/ $out/lib/lv2
+    cp -r CharacterCompressorMono.lv2/ $out/lib/lv2
   '';
 
   meta = {