diff --git a/BUILDING.md b/BUILDING.md
index de1eb29..707ebce 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -196,7 +196,7 @@
 make OPENOLTDEVICE=asfvolt16 OPENOLT_PROTO_VER=master
 ```
 
-By default, the `OPENOLT_PROTO_VER` defaults to git tag *v5.2.1* of the
+By default, the `OPENOLT_PROTO_VER` defaults to git tag *v5.4.6* of the
 [voltha-protos](https://gerrit.opencord.org/gitweb?p=voltha-protos.git;a=summary)
 repo.
 
@@ -333,7 +333,7 @@
 make OPENOLTDEVICE=rlt-3200g-w OPENOLT_PROTO_VER=master
 ```
 
-By default, the `OPENOLT_PROTO_VER` defaults to git tag *v5.2.1* of the
+By default, the `OPENOLT_PROTO_VER` defaults to git tag *v5.4.6* of the
 [voltha-protos](https://gerrit.opencord.org/gitweb?p=voltha-protos.git;a=summary)
 repo.
 
@@ -431,7 +431,7 @@
 make OPENOLTDEVICE=sda3016ss OPENOLT_PROTO_VER=master
 ```
 
-By default, the `OPENOLT_PROTO_VER` defaults to git tag *v5.2.1* of the
+By default, the `OPENOLT_PROTO_VER` defaults to git tag *v5.4.6* of the
 [voltha-protos](https://gerrit.opencord.org/gitweb?p=voltha-protos.git;a=summary)
 repo.
 
diff --git a/agent/Makefile.in b/agent/Makefile.in
index 425e034..d0986f0 100644
--- a/agent/Makefile.in
+++ b/agent/Makefile.in
@@ -52,7 +52,7 @@
 # This specifies the GIT tag in https://github.com/opencord/voltha-protos
 # repo that we need to refer to, to pick the right version of
 # openolt.proto and tech_profile.proto
-OPENOLT_PROTO_VER ?= v5.2.1
+OPENOLT_PROTO_VER ?= v5.4.10
 
 # Variables used for Inband build
 INBAND = "n"