diff --git a/pkgs/development/python-modules/netcdf4/default.nix b/pkgs/development/python-modules/netcdf4/default.nix
index 93d79c4e626..0baa323d53c 100644
--- a/pkgs/development/python-modules/netcdf4/default.nix
+++ b/pkgs/development/python-modules/netcdf4/default.nix
@@ -1,23 +1,25 @@
-{ stdenv, buildPythonPackage, fetchurl, isPyPy
-, numpy, zlib, netcdf, hdf5, curl, libjpeg, cython
+{ stdenv, buildPythonPackage, fetchPypi, isPyPy, pytest
+, numpy, zlib, netcdf, hdf5, curl, libjpeg, cython, cftime
 }:
 buildPythonPackage rec {
   pname = "netCDF4";
-  name = "${pname}-${version}";
   version = "1.4.0";
 
   disabled = isPyPy;
 
-  src = fetchurl {
-    url = "mirror://pypi/n/netCDF4/${name}.tar.gz";
+  src = fetchPypi {
+    inherit pname version;
     sha256 = "a6c0b46f410f101c09d60b8cc460aafec06732f0130c6cb2730717bcc605b388";
   };
 
+  checkInputs = [ pytest ];
+
   buildInputs = [
     cython
   ];
 
   propagatedBuildInputs = [
+    cftime
     numpy
     zlib
     netcdf
@@ -26,6 +28,13 @@ buildPythonPackage rec {
     libjpeg
   ];
 
+  checkPhase = ''
+    py.test test/tst_*.py
+  '';
+
+  # Tests need fixing.
+  doCheck = false;
+
   # Variables used to configure the build process
   USE_NCCONFIG="0";
   HDF5_DIR="${hdf5}";