diff --git a/pkgs/development/libraries/audio/lv2/default.nix b/pkgs/development/libraries/audio/lv2/default.nix
index 136a825eef9..ce8ad3f9d52 100644
--- a/pkgs/development/libraries/audio/lv2/default.nix
+++ b/pkgs/development/libraries/audio/lv2/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "lv2-${version}";
-  version = "1.0.0";
+  version = "1.4.0";
 
   src = fetchurl {
     url = "http://lv2plug.in/spec/${name}.tar.bz2";
-    sha256 = "0lfp7679wwqd49k4mjxwqslpfx5fz2q7akxqayg400zqn70whzl5";
+    sha256 = "035hlfva2mij698nj3z1mz9g4mj4z5jx9axs6ww47jgyjcq38asz";
   };
 
   buildInputs = [ gtk libsndfile pkgconfig python ];