diff --git a/go.mod b/go.mod
index 9f92c8bdbd..1a7b1c6a46 100644
--- a/go.mod
+++ b/go.mod
@@ -15,6 +15,7 @@ require (
 	github.com/aws/aws-sdk-go v1.30.16 // indirect
 	github.com/caos/logging v0.0.1
 	github.com/cockroachdb/cockroach-go v0.0.0-20200411195601-6f5842749cfc
+	github.com/envoyproxy/protoc-gen-validate v0.1.0
 	github.com/ghodss/yaml v1.0.0
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
 	github.com/golang/mock v1.4.3