diff --git a/pkgs/applications/audio/munt/default.nix b/pkgs/applications/audio/munt/default.nix
index c9a1e9bea80..bf9710fb17e 100644
--- a/pkgs/applications/audio/munt/default.nix
+++ b/pkgs/applications/audio/munt/default.nix
@@ -9,14 +9,14 @@ let
     categories = "Audio;AudioVideo;";
   };
 in mkDerivation rec {
-  version = "2.3.0";
+  version = "2.4.0";
   pname = "munt";
 
   src = fetchFromGitHub {
     owner = pname;
     repo = pname;
-    rev = with stdenv.lib.versions; "${pname}_${major version}_${minor version}_${patch version}";
-    sha256 = "0fjhshs4w942rlfksalalqshflbq83pyz1z0hcq53falh9v54cyw";
+    rev = with stdenv.lib.versions; "libmt32emu_${major version}_${minor version}_${patch version}";
+    sha256 = "0521i7js5imlsxj6n7181w5szfjikam0k4vq1d2ilkqgcwrkg6ln";
   };
 
   postInstall = ''
@@ -31,7 +31,7 @@ in mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Multi-platform software synthesiser emulating Roland MT-32, CM-32L, CM-64 and LAPC-I devices";
     homepage = "http://munt.sourceforge.net/";
-    license = licenses.gpl2;
+    license = with licenses; [ lgpl21 gpl3 ];
     platforms = platforms.linux;
     maintainers = with maintainers; [ gnidorah ];
   };