diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 92fa94b7ab5..da25c385b5a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -10021,6 +10021,8 @@ let
     name = "pep8-${version}";
     version = "1.6.2";
 
+    disabled = isPy35; # Not yet supported
+
     src = pkgs.fetchurl {
       url = "http://pypi.python.org/packages/source/p/pep8/${name}.tar.gz";
       sha256 = "1zybkcdw1sx84dvkfss96nhykqg9bc0cdpwpl4k9wlxm61bf7dxq";