diff --git a/pkgs/tools/text/gnused/default.nix b/pkgs/tools/text/gnused/default.nix
index 6bfea5f103f..66fcb3d1929 100644
--- a/pkgs/tools/text/gnused/default.nix
+++ b/pkgs/tools/text/gnused/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
 
   src = fetchurl {
     url = mirror://gnu/sed/sed-4.2.1.tar.gz;
-    md5 = "0q1hzjvr6pzhaagidg7pj76k1fzz5nl15np7p72w9zcpw0f58ww7";
+    sha256 = "0q1hzjvr6pzhaagidg7pj76k1fzz5nl15np7p72w9zcpw0f58ww7";
   };
 
   meta = {