diff --git a/clickhouse/config.xml b/clickhouse/config.xml
index 8998143..55cdbbd 100644
--- a/clickhouse/config.xml
+++ b/clickhouse/config.xml
@@ -1,7 +1,10 @@
 <yandex>
     <max_server_memory_usage_to_ram_ratio from_env="MAX_MEMORY_USAGE_RATIO" />
     <logger>
         <level>information</level>
         <console>1</console>
     </logger>
+    <merge_tree>
+        <enable_mixed_granularity_parts>1</enable_mixed_granularity_parts>
+    </merge_tree>
 </yandex>