diff --git a/pkgs/by-name/as/asn1c/package.nix b/pkgs/by-name/as/asn1c/package.nix
index 1072090c2112..9f07efcb9169 100644
--- a/pkgs/by-name/as/asn1c/package.nix
+++ b/pkgs/by-name/as/asn1c/package.nix
@@ -1,39 +1,64 @@
 {
   lib,
   stdenv,
-  fetchurl,
+  autoreconfHook,
+  versionCheckHook,
+  fetchFromGitHub,
   perl,
+  nix-update-script,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "asn1c";
-  version = "0.9.28";
+  version = "0.9.29";
 
-  src = fetchurl {
-    url = "https://lionet.info/soft/asn1c-${finalAttrs.version}.tar.gz";
-    hash = "sha256-gAdEC2R+8t2ftz2THDOsEXZOavskN9vmOLtOX8gjhrk=";
+  src = fetchFromGitHub {
+    owner = "vlm";
+    repo = "asn1c";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-ms4+tzlVdV0pVGhdBod8sepjHGS4OVxJb3HdrFKv9Cc=";
   };
 
   outputs = [
     "out"
     "doc"
     "man"
+
+    # for the one perl utility
+    "crfc2asn1"
+  ];
+
+  postPatch = ''
+    patchShebangs examples/crfc2asn1.pl
+  '';
+
+  nativeBuildInputs = [
+    autoreconfHook
+    versionCheckHook
   ];
 
   buildInputs = [ perl ];
 
-  preConfigure = ''
-    patchShebangs examples/crfc2asn1.pl
-  '';
+  enableParallelBuilding = true;
 
   postInstall = ''
     cp -r skeletons/standard-modules $out/share/asn1c
   '';
 
-  doCheck = true;
+  # Barely anyone uses this, so make it a split-output
+  # so we don't carry the dependency on perl into bin.
+  postFixup = ''
+    mkdir -p $crfc2asn1/bin
+    mv $out/bin/crfc2asn1.pl $crfc2asn1/bin/crfc2asn1
+  '';
+
+  doInstallCheck = true;
+
+  passthru.updateScript = nix-update-script { };
 
   meta = {
-    homepage = "http://lionet.info/asn1c/compiler.html";
+    mainProgram = "asn1c";
+    homepage = "https://lionet.info/asn1c/compiler.html";
     description = "Open Source ASN.1 Compiler";
     license = lib.licenses.bsd2;
     platforms = lib.platforms.unix;