diff --git a/vendor/modules.txt b/vendor/modules.txt
index 442a545..84772e1 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -20,6 +20,11 @@
 github.com/golang/protobuf/ptypes/timestamp
 # github.com/google/uuid v1.1.1
 github.com/google/uuid
+# github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4
+github.com/grpc-ecosystem/go-grpc-middleware
+github.com/grpc-ecosystem/go-grpc-middleware/tags
+github.com/grpc-ecosystem/go-grpc-middleware/tracing/opentracing
+github.com/grpc-ecosystem/go-grpc-middleware/util/metautils
 # github.com/hashicorp/consul/api v1.2.0
 github.com/hashicorp/consul/api
 # github.com/hashicorp/go-cleanhttp v0.5.1