diff --git a/pkgs/by-name/nn/nncp/package.nix b/pkgs/by-name/nn/nncp/package.nix
index 8860b501afe3..28a7609bc8da 100644
--- a/pkgs/by-name/nn/nncp/package.nix
+++ b/pkgs/by-name/nn/nncp/package.nix
@@ -12,7 +12,7 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "nncp";
-  version = "8.11.0";
+  version = "8.12.1";
   outputs = [
     "out"
     "doc"
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   src = fetchurl {
     url = "http://www.nncpgo.org/download/nncp-${finalAttrs.version}.tar.xz";
-    hash = "sha256-7EEUvNkYSqh4HzjbqjqgQlXfu6nDU2v3WWnma8M0r/I=";
+    hash = "sha256-yTwndQ43aBCned7iKPZm70zCC3zMapf2GXtornjiZos=";
   };
 
   nativeBuildInputs = [
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildPhase = ''
     runHook preBuild
-    ./bin/build
+    ./build
     runHook postBuild
   '';