diff --git a/core/kg/go.mod b/core/kg/go.mod
index ebc81e8..990e6e9 100644
--- a/core/kg/go.mod
+++ b/core/kg/go.mod
@@ -4,15 +4,16 @@
 
 require (
 	github.com/Masterminds/squirrel v1.5.0
+	github.com/golang/protobuf v1.4.2
 	github.com/gorilla/mux v1.8.0
 	github.com/jmoiron/sqlx v1.3.1
 	github.com/pkg/errors v0.9.1
 	github.com/spf13/cobra v1.1.3
-	github.com/vardius/shutdown v1.0.2
 	go.uber.org/zap v1.16.0
 	golang.org/x/sys v0.0.0-20200122134326-e047566fdf82 // indirect
 	golang.org/x/tools v0.0.0-20200313205530-4303120df7d8 // indirect
 	google.golang.org/grpc v1.35.0
+	google.golang.org/protobuf v1.25.0
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0
 )