diff --git a/pkgs/development/python-modules/pyu2f/default.nix b/pkgs/development/python-modules/pyu2f/default.nix
index 65387824302b..609d8bfcebae 100644
--- a/pkgs/development/python-modules/pyu2f/default.nix
+++ b/pkgs/development/python-modules/pyu2f/default.nix
@@ -4,6 +4,7 @@
 , six
 , mock
 , pyfakefs
+, pytest-forked
 , pytestCheckHook
 }:
 
@@ -26,6 +27,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [
     mock
     pyfakefs
+    pytest-forked
     pytestCheckHook
   ];