diff --git a/home.nix b/home.nix
index 42492f5..96bb22d 100644
--- a/home.nix
+++ b/home.nix
@@ -55,6 +55,7 @@
   # if you don't want to manage your shell through Home Manager.
   home.sessionVariables = {
     # EDITOR = "emacs";
+    TZ = "Asia/Shanghai";
     LANG = "zh_CN.UTF-8";
     GOPROXY = "https://goproxy.cn,direct";
   };