diff --git a/pkgs/development/python-modules/potr/default.nix b/pkgs/development/python-modules/potr/default.nix
new file mode 100644
index 00000000000..ba5ede1ad77
--- /dev/null
+++ b/pkgs/development/python-modules/potr/default.nix
@@ -0,0 +1,20 @@
+{ stdenv, fetchPypi, buildPythonPackage, pycrypto }:
+
+buildPythonPackage rec {
+  pname = "python-potr";
+  version = "1.0.2";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "f95b9a7feaf8e3a6aaa898609f8a2ada55518cf52fc09152775c4c59c99b8ea6";
+  };
+
+  propagatedBuildInputs = [ pycrypto ];
+
+  meta = with stdenv.lib; {
+    description = "A pure Python OTR implementation";
+    homepage = "http://python-otr.pentabarf.de/";
+    license = licenses.lgpl3Plus;
+    maintainers = with maintainers; [ globin ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 9239a2b82eb..76af703b8f9 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -16670,24 +16670,7 @@ EOF
     };
   };
 
-  potr = buildPythonPackage rec {
-    version = "1.0.1";
-    name = "potr-${version}";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/p/python-potr/python-${name}.zip";
-      sha256 = "1b3vjbv8hvynwj6amw3rg5zj8bagynbj0ipy09xwksf1mb0kz8m8";
-    };
-
-    propagatedBuildInputs = with self ; [ pycrypto ];
-
-    meta = {
-      description = "A pure Python OTR implementation";
-      homepage = "http://python-otr.pentabarf.de/";
-      license = licenses.lgpl3Plus;
-      maintainers = with maintainers; [ globin ];
-    };
-  };
+  potr = callPackage ../development/python-modules/potr {};
 
   pluggy = callPackage ../development/python-modules/pluggy {};