diff --git a/ch06/token-based-authentication/go/server/go.mod b/ch06/token-based-authentication/go/server/go.mod
index c798bf1..a422ab4 100644
--- a/ch06/token-based-authentication/go/server/go.mod
+++ b/ch06/token-based-authentication/go/server/go.mod
@@ -3,9 +3,8 @@ module github.com/grpc-up-and-running/samples/ch06/token-based-authentication/go
 go 1.15
 
 require (
-	github.com/golang/protobuf v1.4.2
-	github.com/google/uuid v1.1.2
-	google.golang.org/grpc v1.32.0
+	github.com/google/uuid v1.3.0
+	google.golang.org/grpc v1.53.0
 	productinfo/server v0.0.0-20200901064603-1f9de1e3efd9
 )