diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index fdbe2c5cd93f..d386f9131dbe 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9115,19 +9115,22 @@ in modules // {
 
 
   lxml = buildPythonPackage ( rec {
-    name = "lxml-3.3.6";
+    name = "lxml-3.4.4";
+    # Warning : as of nov. 9th, 2015, version 3.5.0b1 breaks a lot of things,
+    # more work is needed before upgrading
 
     src = pkgs.fetchurl {
       url = "http://pypi.python.org/packages/source/l/lxml/${name}.tar.gz";
-      md5 = "a804b36864c483fe7abdd7f493a0c379";
+      sha256 = "16a0fa97hym9ysdk3rmqz32xdjqmy4w34ld3rm3jf5viqjx65lxk";
     };
 
     buildInputs = with self; [ pkgs.libxml2 pkgs.libxslt ];
 
     meta = {
       description = "Pythonic binding for the libxml2 and libxslt libraries";
-      homepage = http://codespeak.net/lxml/index.html;
-      license = "BSD";
+      homepage = http://lxml.de;
+      license = licenses.bsd3;
+      maintainers = with maintainers; [ sjourdois ];
     };
   });