diff --git a/pkgs/development/python-modules/setuptools/default.nix b/pkgs/development/python-modules/setuptools/default.nix
index 74624063ba3c..a924a1f3b852 100644
--- a/pkgs/development/python-modules/setuptools/default.nix
+++ b/pkgs/development/python-modules/setuptools/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation rec {
   version = "19.4";  # 18.4 and up breaks python34Packages.characteristic and many others
 
   src = fetchurl {
-    url = "http://pypi.python.org/packages/source/s/setuptools/${shortName}.tar.gz";
+    url = "https://pypi.python.org/packages/source/s/setuptools/${shortName}.tar.gz";
     sha256 = "214bf29933f47cf25e6faa569f710731728a07a19cae91ea64f826051f68a8cf";
   };