diff --git a/commafeed-server/config.dev.yml b/commafeed-server/config.dev.yml
index 436cf710..f2fb3246 100644
--- a/commafeed-server/config.dev.yml
+++ b/commafeed-server/config.dev.yml
@@ -95,11 +95,11 @@ app:
 # -------------------  
 # for MariaDB
 # driverClass is org.mariadb.jdbc.Driver
-# url is jdbc:mariadb://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true
+# url is jdbc:mariadb://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true&timezone=UTC
 #
 # for MySQL
 # driverClass is com.mysql.cj.jdbc.Driver
-# url is jdbc:mysql://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true
+# url is jdbc:mysql://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true&timezone=UTC
 #
 # for PostgreSQL
 # driverClass is org.postgresql.Driver
diff --git a/commafeed-server/config.yml.example b/commafeed-server/config.yml.example
index 28445c1f..beb6b345 100644
--- a/commafeed-server/config.yml.example
+++ b/commafeed-server/config.yml.example
@@ -95,11 +95,11 @@ app:
 # -------------------
 # for MariaDB
 # driverClass is org.mariadb.jdbc.Driver
-# url is jdbc:mariadb://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true
+# url is jdbc:mariadb://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true&timezone=UTC
 #
 # for MySQL
 # driverClass is com.mysql.cj.jdbc.Driver
-# url is jdbc:mysql://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true
+# url is jdbc:mysql://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true&timezone=UTC
 #
 # for PostgreSQL
 # driverClass is org.postgresql.Driver
diff --git a/commafeed-server/src/test/resources/config.test.yml b/commafeed-server/src/test/resources/config.test.yml
index 105241c2..ffe9f043 100644
--- a/commafeed-server/src/test/resources/config.test.yml
+++ b/commafeed-server/src/test/resources/config.test.yml
@@ -95,11 +95,11 @@ app:
 # -------------------
 # for MariaDB
 # driverClass is org.mariadb.jdbc.Driver
-# url is jdbc:mariadb://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true
+# url is jdbc:mariadb://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true&timezone=UTC
 #
 # for MySQL
 # driverClass is com.mysql.cj.jdbc.Driver
-# url is jdbc:mysql://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true
+# url is jdbc:mysql://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true&timezone=UTC
 #
 # for PostgreSQL
 # driverClass is org.postgresql.Driver