diff --git a/pkgs/development/python-modules/raven/default.nix b/pkgs/development/python-modules/raven/default.nix
index 66e2595f8d2..c13f08da7ba 100644
--- a/pkgs/development/python-modules/raven/default.nix
+++ b/pkgs/development/python-modules/raven/default.nix
@@ -1,12 +1,11 @@
-{ lib, buildPythonPackage, fetchurl, isPy3k, contextlib2 }:
+{ lib, buildPythonPackage, fetchPypi, isPy3k, contextlib2, blinker }:
 
 buildPythonPackage rec {
   pname = "raven";
   version = "6.4.0";
-  name = pname + "-" + version;
 
-  src = fetchurl {
-    url = "mirror://pypi/r/raven/${name}.tar.gz";
+  src = fetchPypi {
+    inherit pname version;
     sha256 = "00m985w9fja2jf8dpvdhygcr26rwabxkgvcc2v5j6v7d6lrvpvdq";
   };
 
@@ -14,7 +13,7 @@ buildPythonPackage rec {
   # see https://github.com/getsentry/raven-python/blob/master/setup.py
   doCheck = false;
 
-  propagatedBuildInputs = lib.optionals (!isPy3k) [ contextlib2 ];
+  propagatedBuildInputs = [ blinker ] ++ lib.optionals (!isPy3k) [ contextlib2 ];
 
   meta = {
     description = "A Python client for Sentry (getsentry.com)";