diff --git a/tests/integration_tests/tests/streams.rs b/tests/integration_tests/tests/streams.rs
index 8ce2e93bf..52171a9b9 100644
--- a/tests/integration_tests/tests/streams.rs
+++ b/tests/integration_tests/tests/streams.rs
@@ -41,6 +41,7 @@ async fn status_from_server_stream_with_source() {
     jh.await.unwrap();
 }
 
+#[allow(dead_code)]
 struct Unsync(*mut ());
 
 unsafe impl Send for Unsync {}
diff --git a/tonic-health/src/generated/grpc_health_v1.rs b/tonic-health/src/generated/grpc_health_v1.rs
index 9662361f0..eade84e74 100644
--- a/tonic-health/src/generated/grpc_health_v1.rs
+++ b/tonic-health/src/generated/grpc_health_v1.rs
@@ -1,3 +1,4 @@
+// This file is @generated by prost-build.
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct HealthCheckRequest {
diff --git a/tonic-reflection/src/generated/grpc_reflection_v1alpha.rs b/tonic-reflection/src/generated/grpc_reflection_v1alpha.rs
index 7efa6d51a..85e59c00a 100644
--- a/tonic-reflection/src/generated/grpc_reflection_v1alpha.rs
+++ b/tonic-reflection/src/generated/grpc_reflection_v1alpha.rs
@@ -1,3 +1,4 @@
+// This file is @generated by prost-build.
 /// The message sent by the client when calling ServerReflectionInfo method.
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
diff --git a/tonic-types/src/generated/google_rpc.rs b/tonic-types/src/generated/google_rpc.rs
index 4ecb5315e..0e52dcd26 100644
--- a/tonic-types/src/generated/google_rpc.rs
+++ b/tonic-types/src/generated/google_rpc.rs
@@ -1,3 +1,4 @@
+// This file is @generated by prost-build.
 /// The `Status` type defines a logical error model that is suitable for
 /// different programming environments, including REST APIs and RPC APIs. It is
 /// used by [gRPC](<https://github.com/grpc>). Each `Status` message contains