diff --git a/pkgs/development/python-modules/caldav/default.nix b/pkgs/development/python-modules/caldav/default.nix
index aa3aa8b9c02b..653296a927e8 100644
--- a/pkgs/development/python-modules/caldav/default.nix
+++ b/pkgs/development/python-modules/caldav/default.nix
@@ -1,11 +1,11 @@
 { lib, buildPythonPackage, fetchPypi
-, tzlocal, requests, vobject, lxml }:
+, tzlocal, requests, vobject, lxml, nose }:
 
 buildPythonPackage rec {
   pname = "caldav";
   version = "0.6.1";
 
-  propagatedBuildInputs = [ tzlocal requests vobject lxml ];
+  propagatedBuildInputs = [ tzlocal requests vobject lxml nose ];
 
   src = fetchPypi {
     inherit pname version;