diff --git a/tests/integration/test_extreme_deduplication/configs/conf.d/merge_tree.xml b/tests/integration/test_extreme_deduplication/configs/conf.d/merge_tree.xml
index d9062e8da20..6f1d05d125e 100644
--- a/tests/integration/test_extreme_deduplication/configs/conf.d/merge_tree.xml
+++ b/tests/integration/test_extreme_deduplication/configs/conf.d/merge_tree.xml
@@ -4,6 +4,7 @@
         <replicated_deduplication_window_seconds>1</replicated_deduplication_window_seconds>
         <cleanup_delay_period>1</cleanup_delay_period>
         <cleanup_delay_period_random_add>0</cleanup_delay_period_random_add>
+        <max_cleanup_delay_period>1</max_cleanup_delay_period>
         <old_parts_lifetime>1</old_parts_lifetime>
     </merge_tree>
 </clickhouse>
diff --git a/tests/integration/test_extreme_deduplication/test.py b/tests/integration/test_extreme_deduplication/test.py
index 71f783d37c9..9604809f0b5 100644
--- a/tests/integration/test_extreme_deduplication/test.py
+++ b/tests/integration/test_extreme_deduplication/test.py
@@ -50,7 +50,7 @@ def test_deduplication_window_in_seconds(started_cluster):
     assert TSV(node.query("SELECT count() FROM simple")) == TSV("2\n")
 
     # wait clean thread
-    time.sleep(2)
+    time.sleep(5)
 
     assert (
         TSV.toMat(