diff --git a/hs-im-server/im-service/src/main/resources/application.yml b/hs-im-server/im-service/src/main/resources/application.yml
index 9f96606..4a25419 100644
--- a/hs-im-server/im-service/src/main/resources/application.yml
+++ b/hs-im-server/im-service/src/main/resources/application.yml
@@ -1,3 +1,6 @@
 spring:
+  jackson:
+    time-zone: GMT+8
+
   profiles:
-    active: prod
+    active: dev