diff --git a/tests/test_lock.py b/tests/test_lock.py
index 00c50f54..4f2b8fa2 100644
--- a/tests/test_lock.py
+++ b/tests/test_lock.py
@@ -101,7 +101,7 @@ def test_blocking_timeout(self, r):
         assert lock1.acquire(blocking=False)
         bt = 0.4
         sleep = 0.05
-        fudge_factor = 0.05
+        fudge_factor = 0.1
         lock2 = self.get_lock(r, "foo", sleep=sleep, blocking_timeout=bt)
         start = time.monotonic()
         assert not lock2.acquire()