1 files changed, 4 insertions, 5 deletions
diff --git a/nixpkgs/pkgs/development/tools/parsing/bison/3.x.nix b/nixpkgs/pkgs/development/tools/parsing/bison/3.x.nix
index 3d5f09b7bc3e..09d7daa97bff 100644
--- a/nixpkgs/pkgs/development/tools/parsing/bison/3.x.nix
+++ b/nixpkgs/pkgs/development/tools/parsing/bison/3.x.nix
@@ -1,15 +1,14 @@
 { stdenv, fetchurl, m4, perl, help2man }:
 
 stdenv.mkDerivation rec {
-  name = "bison-3.2.4";
+  pname = "bison";
+  version = "3.3.1";
 
   src = fetchurl {
-    url = "mirror://gnu/bison/${name}.tar.gz";
-    sha256 = "16n7xs3sa1rlhs8y8zg4gi2s2kbkz8d69w3xp935wjykk0i3wryb";
+    url = "mirror://gnu/${pname}/${pname}-${version}.tar.gz";
+    sha256 = "0sz6rzmfz5scian0a28lrvkrsd0108dmxrxpqh4nyi2ahlglbma1";
   };
 
-  patches = []; # remove on another rebuild
-
   nativeBuildInputs = [ m4 perl ] ++ stdenv.lib.optional stdenv.isSunOS help2man;
   propagatedBuildInputs = [ m4 ];