diff --git a/pkgs/applications/audio/csound/default.nix b/pkgs/applications/audio/csound/default.nix
index 693d8e2a6e50..afca63a2a8a2 100644
--- a/pkgs/applications/audio/csound/default.nix
+++ b/pkgs/applications/audio/csound/default.nix
@@ -12,13 +12,13 @@
 }:
 
 stdenv.mkDerivation {
-  name = "csound-6.03.2";
+  name = "csound-6.04";
 
   enableParallelBuilding = true;
 
   src = fetchurl {
-    url = mirror://sourceforge/csound/Csound6.03.2.tar.gz;
-    sha256 = "0w6ij57dbfjljpf05bb9r91jphwaq1v63rh0713vl2n11d73dy7m";
+    url = mirror://sourceforge/csound/Csound6.04.tar.gz;
+    sha256 = "1030w38lxdwjz1irr32m9cl0paqmgr02lab2m7f7j1yihwxj1w0g";
   };
 
   buildInputs = [ cmake libsndfile flex bison alsaLib libpulseaudio tcltk ];