diff --git a/pkgs/development/python-modules/txtorcon/default.nix b/pkgs/development/python-modules/txtorcon/default.nix
index 60947bc769c..cd2d6c9a365 100644
--- a/pkgs/development/python-modules/txtorcon/default.nix
+++ b/pkgs/development/python-modules/txtorcon/default.nix
@@ -26,8 +26,10 @@ buildPythonPackage rec {
     substituteInPlace requirements.txt --replace "ipaddress>=1.0.16" ""
   '';
 
+  # Skip a failing test until fixed upstream:
+  # https://github.com/meejah/txtorcon/issues/250
   checkPhase = ''
-    pytest .
+    pytest --ignore=test/test_util.py .
   '';
 
   meta = {