diff --git a/pkgs/by-name/pn/pngout/package.nix b/pkgs/by-name/pn/pngout/package.nix
index c8a59c29033a..ffe2f663501f 100644
--- a/pkgs/by-name/pn/pngout/package.nix
+++ b/pkgs/by-name/pn/pngout/package.nix
@@ -7,6 +7,9 @@
 
 let
   platforms = {
+    aarch64-darwin = {
+      folder = ".";
+    };
     aarch64-linux = {
       folder = "aarch64";
       ld-linux = "ld-linux-aarch64.so.1";
@@ -33,22 +36,22 @@ let
   download =
     if stdenv.hostPlatform.isDarwin then
       {
-        extension = "macos.zip";
-        hash = "sha256-MnL6lH7q/BrACG4fFJNfnvoh0JClVeaJIlX+XIj2aG4=";
+        suffix = "20230322-mac.zip";
+        hash = "sha256-Lj63k0UgYECuOg0NDs/prQHZL+UAK4oWdqZWMqVoQOE=";
       }
     else
       {
-        extension = "linux.tar.gz";
+        suffix = "20200115-linux.tar.gz";
         hash = "sha256-rDi7pvDeKQM96GZTjDr6ZDQTGbaVu+OI77xf2egw6Sg=";
       };
 in
 stdenv.mkDerivation rec {
   pname = "pngout";
-  version = "20200115";
+  version = "20230322";
 
   src = fetchurl {
     inherit (download) hash;
-    url = "http://static.jonof.id.au/dl/kenutils/pngout-${version}-${download.extension}";
+    url = "https://www.jonof.id.au/files/kenutils/pngout-${download.suffix}";
   };
 
   nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ unzip ];