diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 89971bdf05b..87cd2970fab 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -412,26 +412,6 @@ in {
       maintainers = with maintainers; [ teh ];
     };
   };
-  acme_0_5_0 = buildPythonPackage rec {
-    version = "0.5.0";
-    name = "acme-${version}";
-
-    src = pkgs.fetchFromGitHub {
-      owner = "letsencrypt";
-      repo = "letsencrypt";
-      rev = "v${version}";
-      sha256 = "0x098cdyfgqvh7x5d3sz56qjpjyg5b4fl82086sm43d8mbz0h5rm";
-    };
-
-    propagatedBuildInputs = with self; [
-      cryptography pyasn1 pyopenssl pyRFC3339 pytz requests2 six werkzeug mock
-      ndg-httpsclient
-    ];
-
-    buildInputs = with self; [ nose ];
-
-    sourceRoot = "letsencrypt-v${version}-src/acme";
-  };
 
   acme = buildPythonPackage rec {
     inherit (pkgs.certbot) src version;