diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c248e4c7784..ae004f66947 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -21202,20 +21202,19 @@ in {
 
   pyudev = buildPythonPackage rec {
     name = "pyudev-${version}";
-    version = "0.16.1";
+    version = "0.20.0";
 
     src = pkgs.fetchurl {
       url = "mirror://pypi/p/pyudev/${name}.tar.gz";
-      sha256 = "765d1c14bd9bd031f64e2612225621984cb2bbb8cbc0c03538bcc4c735ff1c95";
+      sha256 = "0al4cpg0m8n7cd06w94x3cx8mxaqg08bfv4r6a3pkgqxc74mpn0l";
     };
 
     postPatch = ''
-      sed -i -e '/udev_library_name/,/^ *libudev/ {
-        s|CDLL([^,]*|CDLL("${pkgs.systemd.lib}/lib/libudev.so.1"|p; d
-      }' pyudev/_libudev.py
+      substituteInPlace src/pyudev/_ctypeslib/libudev.py \
+        --replace "find_library('udev')" "'${pkgs.systemd.lib}/lib/libudev.so'"
     '';
 
-    propagatedBuildInputs = with self; [ pkgs.systemd ];
+    propagatedBuildInputs = with self; [ pkgs.systemd six ];
 
     meta = {
       homepage = "http://pyudev.readthedocs.org/";