diff --git a/vendor/modules.txt b/vendor/modules.txt
index 4e410d6..15c4225 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -86,13 +86,14 @@
 github.com/modern-go/concurrent
 # github.com/modern-go/reflect2 v1.0.1
 github.com/modern-go/reflect2
-# github.com/opencord/voltha-protos/v4 v4.1.2
+# github.com/opencord/voltha-protos/v4 v4.2.0
 github.com/opencord/voltha-protos/v4/go/common
 github.com/opencord/voltha-protos/v4/go/ext/config
 github.com/opencord/voltha-protos/v4/go/extension
 github.com/opencord/voltha-protos/v4/go/inter_container
 github.com/opencord/voltha-protos/v4/go/omci
 github.com/opencord/voltha-protos/v4/go/openflow_13
+github.com/opencord/voltha-protos/v4/go/openolt
 github.com/opencord/voltha-protos/v4/go/tech_profile
 github.com/opencord/voltha-protos/v4/go/voltha
 # github.com/opentracing/opentracing-go v1.1.0