diff --git a/app.go b/app.go
index 8d228b4..0444247 100644
--- a/app.go
+++ b/app.go
@@ -35,9 +35,6 @@ import (
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/internal/credentials"
-
-	// "google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/peer"
 	"google.golang.org/grpc/reflection"