diff --git a/pkgs/development/python-modules/partd/default.nix b/pkgs/development/python-modules/partd/default.nix
index 1db458a0d0f..ef706c65c6c 100644
--- a/pkgs/development/python-modules/partd/default.nix
+++ b/pkgs/development/python-modules/partd/default.nix
@@ -24,7 +24,7 @@ buildPythonPackage rec {
 
   checkPhase = ''
     rm partd/tests/test_zmq.py # requires network & fails
-    py.test
+    py.test -k "not test_serialize"
   '';
 
   meta = {