diff --git a/pkgs/development/python-modules/datadog/default.nix b/pkgs/development/python-modules/datadog/default.nix
index 7b07f343d21..35d830f81b5 100644
--- a/pkgs/development/python-modules/datadog/default.nix
+++ b/pkgs/development/python-modules/datadog/default.nix
@@ -1,19 +1,25 @@
-{ stdenv, buildPythonPackage, fetchPypi
-, pillow, tox, mock, six, nose, requests, decorator, simplejson }:
+{ lib, buildPythonPackage, fetchFromGitHub, isPy3k
+, decorator, requests, simplejson
+, nose, mock }:
 
 buildPythonPackage rec {
   pname = "datadog";
   version = "0.20.0";
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "7bb4af836d7422a6138f983b81c16acd56c2d608913982602856cc273ae74768";
+  # no tests in PyPI tarball
+  # https://github.com/DataDog/datadogpy/pull/259
+  src = fetchFromGitHub {
+    owner = "DataDog";
+    repo = "datadogpy";
+    rev = "v${version}";
+    sha256 = "1p4p14853yrsl8py4ca7za7a12qzw0xwgz64f5kzx8a6vpv3p3md";
   };
 
-  buildInputs = [ pillow tox mock six nose ];
-  propagatedBuildInputs = [ requests decorator simplejson ];
+  propagatedBuildInputs = [ decorator requests simplejson ];
 
-  meta = with stdenv.lib; {
+  checkInputs = [ nose mock ];
+
+  meta = with lib; {
     description = "The Datadog Python library";
     license = licenses.bsd3;
     homepage = https://github.com/DataDog/datadogpy;