diff --git a/pkgs/development/python-modules/roman-numerals/default.nix b/pkgs/development/python-modules/roman-numerals/default.nix
index 0360ef4b7909..c16b1d37c17f 100644
--- a/pkgs/development/python-modules/roman-numerals/default.nix
+++ b/pkgs/development/python-modules/roman-numerals/default.nix
@@ -24,6 +24,10 @@ buildPythonPackage (finalAttrs: {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
+  pytestFlags = [
+    "-Wignore::pytest.PytestRemovedIn10Warning"
+  ];
+
   pythonImportsCheck = [ "roman_numerals" ];
 
   meta = {