diff --git a/pkgs/development/python-modules/filelock/default.nix b/pkgs/development/python-modules/filelock/default.nix
index 1ef40a71fc1f..80810b707766 100644
--- a/pkgs/development/python-modules/filelock/default.nix
+++ b/pkgs/development/python-modules/filelock/default.nix
@@ -39,6 +39,8 @@ buildPythonPackage rec {
   disabledTestPaths = [
     # Circular dependency with virtualenv
     "tests/test_virtualenv.py"
+    # Very prone to timeouts on busy machines
+    "tests/test_filelock.py"
   ];
 
   meta = {