diff --git a/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/context.go b/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/context.go
index 583025c..0da1658 100644
--- a/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/context.go
+++ b/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/context.go
@@ -69,10 +69,10 @@
 	return t
 }
 
-func setInContext(ctx context.Context, tags Tags) context.Context {
+func SetInContext(ctx context.Context, tags Tags) context.Context {
 	return context.WithValue(ctx, ctxMarkerKey, tags)
 }
 
-func newTags() Tags {
+func NewTags() Tags {
 	return &mapTags{values: make(map[string]interface{})}
 }
diff --git a/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/fieldextractor.go b/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/fieldextractor.go
index 549ff48..a4073ab 100644
--- a/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/fieldextractor.go
+++ b/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/fieldextractor.go
@@ -64,10 +64,10 @@
 		field := v.Field(i)
 		kind := field.Kind()
 		// Only recurse down direct pointers, which should only be to nested structs.
-		if kind == reflect.Ptr {
+		if (kind == reflect.Ptr || kind == reflect.Interface) && field.CanInterface() {
 			reflectMessageTags(field.Interface(), existingMap, tagName)
 		}
-		// In case of arrays/splices (repeated fields) go down to the concrete type.
+		// In case of arrays/slices (repeated fields) go down to the concrete type.
 		if kind == reflect.Array || kind == reflect.Slice {
 			if field.Len() == 0 {
 				continue
diff --git a/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/interceptors.go b/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/interceptors.go
index 038afd2..a7ced60 100644
--- a/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/interceptors.go
+++ b/vendor/github.com/grpc-ecosystem/go-grpc-middleware/tags/interceptors.go
@@ -4,10 +4,12 @@
 package grpc_ctxtags
 
 import (
-	"github.com/grpc-ecosystem/go-grpc-middleware"
-	"golang.org/x/net/context"
+	"context"
+
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/peer"
+
+	"github.com/grpc-ecosystem/go-grpc-middleware"
 )
 
 // UnaryServerInterceptor returns a new unary server interceptors that sets the values for request tags.
@@ -66,11 +68,11 @@
 }
 
 func newTagsForCtx(ctx context.Context) context.Context {
-	t := newTags()
+	t := NewTags()
 	if peer, ok := peer.FromContext(ctx); ok {
 		t.Set("peer.address", peer.Addr.String())
 	}
-	return setInContext(ctx, t)
+	return SetInContext(ctx, t)
 }
 
 func setRequestFieldTags(ctx context.Context, f RequestFieldExtractorFunc, fullMethodName string, req interface{}) {