diff --git a/pkgs/development/python-modules/barectf/default.nix b/pkgs/development/python-modules/barectf/default.nix
index d2083c08fa60..5c44f09f0cd1 100644
--- a/pkgs/development/python-modules/barectf/default.nix
+++ b/pkgs/development/python-modules/barectf/default.nix
@@ -50,6 +50,10 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  pytestFlagsArray = [
+    "-W" "ignore::pytest.PytestRemovedIn8Warning"
+  ];
+
   meta = with lib; {
     description = "Generator of ANSI C tracers which output CTF data streams ";
     homepage = "https://github.com/efficios/barectf";