diff --git a/pkgs/applications/misc/pdfdiff/default.nix b/pkgs/applications/misc/pdfdiff/default.nix
index e21b06bf25ca..c80396840e41 100644
--- a/pkgs/applications/misc/pdfdiff/default.nix
+++ b/pkgs/applications/misc/pdfdiff/default.nix
@@ -1,37 +1,40 @@
-{ lib, python2Packages, fetchurl, xpdf }:
+{ lib
+, fetchFromGitHub
+, python3Packages
+, xpdf
+}:
 
-python2Packages.buildPythonApplication rec {
+python3Packages.buildPythonApplication rec {
   pname = "pdfdiff";
-  version = "0.92";
+  version = "0.93";
 
-  src = fetchurl {
-    url = "https://www.cs.ox.ac.uk/people/cas.cremers/downloads/software/pdfdiff.py";
-    sha256 = "0zxwjjbklz87wkbhkmsvhc7xmv5php7m2a9vm6ydhmhlxsybf836";
+  src = fetchFromGitHub {
+    owner = "cascremers";
+    repo = "pdfdiff";
+    rev = version;
+    hash = "sha256-NPki/PFm0b71Ksak1mimR4w6J2a0jBCbQDTMQR4uZFI=";
   };
 
-  buildInputs = [  python2Packages.wrapPython ];
+  format = "other";
 
   dontConfigure = true;
   dontBuild = true;
   doCheck = false;
 
-  unpackPhase = "cp $src pdfdiff.py";
-
   postPatch = ''
-    sed -i -r 's|pdftotextProgram = "pdftotext"|pdftotextProgram = "${xpdf}/bin/pdftotext"|' pdfdiff.py
-    sed -i -r 's|progName = "pdfdiff.py"|progName = "pdfdiff"|' pdfdiff.py
+    substituteInPlace pdfdiff.py \
+      --replace 'pdftotextProgram = "pdftotext"' 'pdftotextProgram = "${xpdf}/bin/pdftotext"' \
+      --replace 'progName = "pdfdiff.py"' 'progName = "pdfdiff"'
     '';
 
   installPhase = ''
     mkdir -p $out/bin
     cp pdfdiff.py $out/bin/pdfdiff
     chmod +x $out/bin/pdfdiff
-
-    substituteInPlace $out/bin/pdfdiff --replace "#!/usr/bin/python" "#!${python2Packages.python.interpreter}"
     '';
 
   meta = with lib; {
-    homepage = "http://www.cs.ox.ac.uk/people/cas.cremers/misc/pdfdiff.html";
+    homepage = "https://github.com/cascremers/pdfdiff";
     description = "Tool to view the difference between two PDF or PS files";
     license = licenses.gpl2Plus;
     platforms = platforms.linux;