diff --git a/docker-compose.yml b/docker-compose.yml
index 7039ca835..16a3d375a 100755
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -68,7 +68,6 @@ services:
       - ./docker/mysql/conf.d:/etc/mysql/conf.d
       - ./docker/mysql/data:/var/lib/mysql
     environment:
-      TZ: "${TIMEZONE:-PRC}"
       MYSQL_PREFIX: "${DB_PREFIX}"
       MYSQL_ROOT_PASSWORD: "${DB_ROOT_PASSWORD}"
       MYSQL_DATABASE: "${DB_DATABASE}"