diff --git a/Cargo.toml b/Cargo.toml
index 370940fe..353974dd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 strum = "0.25"
 strum_macros = "0.25"
-tonic = "0.10"
+tonic = "0.11"
 
 [build-dependencies]
-tonic-build = "0.10"
+tonic-build = "0.11"
diff --git a/proto/greptime/v1/region/server.proto b/proto/greptime/v1/region/server.proto
index c0d7bc8b..b8b72e4d 100644
--- a/proto/greptime/v1/region/server.proto
+++ b/proto/greptime/v1/region/server.proto
@@ -32,6 +32,8 @@ message RegionRequestHeader {
   map<string, string> tracing_context = 5;
   // DB Name of request, tracking only
   string dbname = 3;
+  // The `timezone` for the request
+  string timezone = 4;
 }
 
 message RegionRequest {