diff --git a/pkgs/tools/audio/abcmidi/default.nix b/pkgs/tools/audio/abcmidi/default.nix
index 6d8376b60357..dc5a010ec741 100644
--- a/pkgs/tools/audio/abcmidi/default.nix
+++ b/pkgs/tools/audio/abcmidi/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "abcMIDI-${version}";
-  version = "2018.04.01";
+  version = "2018.04.18";
 
   src = fetchzip {
     url = "http://ifdo.ca/~seymour/runabc/${name}.zip";
-    sha256 = "1ffr358q663qgcjzg2l50isp8hybxp60r99xma2qhhy7lvyv57x4";
+    sha256 = "0kbval5ckan8vvrlpyz1mkb1ifvr149gxpb7ljbcm890p8hpaxff";
   };
 
   # There is also a file called "makefile" which seems to be preferred by the standard build phase