diff --git a/pkgs/development/python-modules/urwid/default.nix b/pkgs/development/python-modules/urwid/default.nix
index f11af5836ca8..49402d76d745 100644
--- a/pkgs/development/python-modules/urwid/default.nix
+++ b/pkgs/development/python-modules/urwid/default.nix
@@ -68,6 +68,11 @@ buildPythonPackage rec {
 
   pytestFlagsArray = [ "tests" ];
 
+  disabledTests = [
+    # Flaky tests
+    "TwistedEventLoopTest"
+  ];
+
   disabledTestPaths = [
     # expect call hangs
     "tests/test_vterm.py"