diff --git a/pkgs/development/python-modules/dropbox/default.nix b/pkgs/development/python-modules/dropbox/default.nix
index dca83a57a7b..8fc4ee1358b 100644
--- a/pkgs/development/python-modules/dropbox/default.nix
+++ b/pkgs/development/python-modules/dropbox/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi
-, pytestrunner, requests, urllib3, mock, setuptools }:
+, pytestrunner, requests, urllib3, mock, setuptools, stone }:
 
 buildPythonPackage rec {
   pname = "dropbox";
@@ -10,11 +10,16 @@ buildPythonPackage rec {
     sha256 = "7ba43384029424779a4b3ec8d5832362c5c0f37cd644be2fb87e2b30a569849e";
   };
 
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "pytest-runner == 5.2.0" "pytest-runner"
+  '';
+
   # Set DROPBOX_TOKEN environment variable to a valid token.
   doCheck = false;
 
-  buildInputs = [ pytestrunner ];
-  propagatedBuildInputs = [ requests urllib3 mock setuptools ];
+  nativeBuildInputs = [ pytestrunner ];
+  propagatedBuildInputs = [ requests urllib3 mock setuptools stone ];
 
   meta = with lib; {
     description = "A Python library for Dropbox's HTTP-based Core and Datastore APIs";