diff --git a/pkgs/development/python-modules/pyres/default.nix b/pkgs/development/python-modules/pyres/default.nix
index 2ea6043c4279..99c4b7116d5a 100644
--- a/pkgs/development/python-modules/pyres/default.nix
+++ b/pkgs/development/python-modules/pyres/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   checkPhase = ''
     redis-server &
-    nosetests .
+    nosetests . --exclude test_worker_pids
   '';
 
   meta = with stdenv.lib; {