diff --git a/opentelemetry-sdk/tests/trace/test_span_processor.py b/opentelemetry-sdk/tests/trace/test_span_processor.py
index dc777fe940..c751ab96d9 100644
--- a/opentelemetry-sdk/tests/trace/test_span_processor.py
+++ b/opentelemetry-sdk/tests/trace/test_span_processor.py
@@ -461,7 +461,7 @@ def delayed_flush(_):
         for mock_processor in mocks:
             multi_processor.add_span_processor(mock_processor)
 
-        flushed = multi_processor.force_flush(timeout_millis=10)
+        flushed = multi_processor.force_flush(timeout_millis=25)
         # let the thread executing the late_mock continue
         wait_event.set()