diff --git a/pkgs/development/python-modules/pyvirtualdisplay/default.nix b/pkgs/development/python-modules/pyvirtualdisplay/default.nix
index 9905ee45e367..ac2a3bf68f69 100644
--- a/pkgs/development/python-modules/pyvirtualdisplay/default.nix
+++ b/pkgs/development/python-modules/pyvirtualdisplay/default.nix
@@ -14,6 +14,7 @@
   entrypoint2,
   pillow,
   psutil,
+  pytest-timeout,
   pytest-xdist,
   pytestCheckHook,
   vncdo,
@@ -47,7 +48,7 @@ buildPythonPackage rec {
     entrypoint2
     pillow
     psutil
-    pytest-xdist
+    pytest-timeout
     pytestCheckHook
     (vncdo.overridePythonAttrs { doCheck = false; })
     xorg.xorgserver
@@ -55,6 +56,8 @@ buildPythonPackage rec {
     xorg.xvfb
   ];
 
+  pytestFlagsArray = [ "-v" ];
+
   meta = with lib; {
     description = "Python wrapper for Xvfb, Xephyr and Xvnc";
     homepage = "https://github.com/ponty/pyvirtualdisplay";