diff --git a/abci/Cargo.toml b/abci/Cargo.toml
index 8de1fbc..a9c65b8 100644
--- a/abci/Cargo.toml
+++ b/abci/Cargo.toml
@@ -86,5 +86,5 @@ tokio = { version = "1.37.0", features = [
 hex = { version = "0.4.3" }
 lazy_static = { version = "1.4.0" }
 # For tests of gRPC server
-tonic = { version = "0.11.0" }
+tonic = { version = "0.12.3" }
 pollster = { version = "0.3.0" }
diff --git a/proto/Cargo.toml b/proto/Cargo.toml
index 4b04079..8ed7651 100644
--- a/proto/Cargo.toml
+++ b/proto/Cargo.toml
@@ -47,7 +47,7 @@ grpc = [
 prost = { version = "0.12.4", default-features = false, features = [
     "prost-derive",
 ] }
-tonic = { version = "0.11.0", optional = true }
+tonic = { version = "0.12.3", optional = true }
 bytes = { version = "1.6.0", default-features = false, features = ["serde"] }
 serde = { version = "1.0.197", default-features = false, features = ["derive"] }
 subtle-encoding = { version = "0.5.1", default-features = false, features = [