diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 12f7d8f2fed..55f36979cca 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7394,6 +7394,7 @@ let
 
   pyptlib = buildPythonPackage (rec {
     name = "pyptlib-${version}";
+    disabled = isPyPy || isPy3k;
     version = "0.0.6";
 
     src = pkgs.fetchurl {