diff --git a/testing/test_basic.py b/testing/test_basic.py
index d7489bc..dacab70 100755
--- a/testing/test_basic.py
+++ b/testing/test_basic.py
@@ -1345,5 +1345,5 @@ def test_inline_callbacks(x):
         yield
     """
     testdir.makepyfile(test_file)
-    rr = testdir.run(*cmd_opts, timeout=timeout)
+    rr = testdir.run(*cmd_opts, timeout=3 * timeout)
     assert_outcomes(rr, {"failed": 1})