diff --git a/pkgs/development/tools/parsing/bison/3.x.nix b/pkgs/development/tools/parsing/bison/3.x.nix
index b35ad14b32c..e3bd4ac7a5a 100644
--- a/pkgs/development/tools/parsing/bison/3.x.nix
+++ b/pkgs/development/tools/parsing/bison/3.x.nix
@@ -4,8 +4,8 @@ stdenv.mkDerivation rec {
   name = "bison-3.0.2";
 
   src = fetchurl {
-    url = "mirror://gnu/bison/${name}.tar.xz";
-    sha256 = "0g4gjan477lac18m51kv4xzcsp6wjfsfwvd2dxymcl6vid9fihx2";
+    url = "mirror://gnu/bison/${name}.tar.gz";
+    sha256 = "1vc17y6242jlwp0gdj7wsim3nvc1ws7q3j0v3065nz8g9hd9vwnd";
   };
 
   nativeBuildInputs = [ m4 ] ++ stdenv.lib.optionals doCheck [perl flex];