diff --git a/tests/test_timing_issues.py b/tests/test_timing_issues.py
index bf44860..fb0b4fe 100644
--- a/tests/test_timing_issues.py
+++ b/tests/test_timing_issues.py
@@ -51,7 +51,7 @@ def test_batch_fetch_timing(self):
         
         # Very tight timing - each request can take 10-100ms
         # 5 requests sequentially = 50-500ms minimum
-        assert elapsed < 300, f"Batch fetch too slow: {elapsed:.1f}ms"
+        assert elapsed < 500, f"Batch fetch too slow: {elapsed:.1f}ms"
     
     def test_api_success_rate(self):
         """