diff --git a/pkgs/development/python-modules/Flask-PyMongo/default.nix b/pkgs/development/python-modules/Flask-PyMongo/default.nix
index 862fd84c492..7c37bdaddd5 100644
--- a/pkgs/development/python-modules/Flask-PyMongo/default.nix
+++ b/pkgs/development/python-modules/Flask-PyMongo/default.nix
@@ -2,6 +2,7 @@
 , fetchPypi
 , flask
 , pymongo
+, vcversioner
 , lib
 , pytest
 }:
@@ -18,17 +19,17 @@ buildPythonPackage rec {
   checkInputs = [ pytest ];
 
   checkPhase = ''
-    py.test tests
+    py.test
   '';
 
   # Tests seem to hang
   doCheck = false;
 
-  propagatedBuildInputs = [ flask pymongo ];
+  propagatedBuildInputs = [ flask pymongo vcversioner ];
 
   meta = {
     homepage = "http://flask-pymongo.readthedocs.org/";
     description = "PyMongo support for Flask applications";
     license = lib.licenses.bsd2;
   };
-}
\ No newline at end of file
+}