diff -ruN a/test/test_attach.py b/test/test_attach.py
--- a/test/test_attach.py	2025-05-22 20:08:27.761122899 +0000
+++ b/test/test_attach.py	2025-05-22 20:09:14.631997436 +0000
@@ -128,7 +128,7 @@
         'python', '-c', remote_py_code,
     ], {'rpc': True, 'on_stderr': 'OutputHandler'})
     assert jobid > 0
-    exitcode = vim.funcs.jobwait([jobid], 500)[0]
+    exitcode = vim.funcs.jobwait([jobid], 3000)[0]
     messages = vim.command_output('messages')
     assert exitcode == 0, ("the python process failed, :messages =>\n\n" +
                            messages)