diff --git a/deploy/docker-swarm/clickhouse-setup/clickhouse-config.xml b/deploy/docker-swarm/clickhouse-setup/clickhouse-config.xml
index 4e8dc00b30f5..f285997166ce 100644
--- a/deploy/docker-swarm/clickhouse-setup/clickhouse-config.xml
+++ b/deploy/docker-swarm/clickhouse-setup/clickhouse-config.xml
@@ -23,6 +23,9 @@
             [1]: https://github.com/pocoproject/poco/blob/poco-1.9.4-release/Foundation/include/Poco/Logger.h#L105-L114
         -->
         <level>information</level>
+        <formatting>
+            <type>json</type>
+        </formatting>
         <log>/var/log/clickhouse-server/clickhouse-server.log</log>
         <errorlog>/var/log/clickhouse-server/clickhouse-server.err.log</errorlog>
         <!-- Rotation policy
diff --git a/deploy/docker/clickhouse-setup/clickhouse-config.xml b/deploy/docker/clickhouse-setup/clickhouse-config.xml
index 027f53f95115..de47f5a25cd2 100644
--- a/deploy/docker/clickhouse-setup/clickhouse-config.xml
+++ b/deploy/docker/clickhouse-setup/clickhouse-config.xml
@@ -23,6 +23,9 @@
             [1]: https://github.com/pocoproject/poco/blob/poco-1.9.4-release/Foundation/include/Poco/Logger.h#L105-L114
         -->
         <level>information</level>
+        <formatting>
+            <type>json</type>
+        </formatting>
         <log>/var/log/clickhouse-server/clickhouse-server.log</log>
         <errorlog>/var/log/clickhouse-server/clickhouse-server.err.log</errorlog>
         <!-- Rotation policy