diff --git a/VERSION b/VERSION
index 43beb40..a2cec7a 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.0.7
+4.0.8
diff --git a/go.mod b/go.mod
index 019debd..7e64cbf 100644
--- a/go.mod
+++ b/go.mod
@@ -29,7 +29,7 @@
 	github.com/hashicorp/serf v0.8.4 // indirect
 	github.com/jcmturner/gofork v1.0.0 // indirect
 	github.com/onsi/gomega v1.4.2 // indirect
-	github.com/opencord/voltha-protos/v4 v4.0.8
+	github.com/opencord/voltha-protos/v4 v4.0.12
 	github.com/opentracing/opentracing-go v1.1.0
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/pierrec/lz4 v2.3.0+incompatible // indirect
diff --git a/go.sum b/go.sum
index f7e0eeb..16c0a65 100644
--- a/go.sum
+++ b/go.sum
@@ -196,8 +196,8 @@
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v1.4.2 h1:3mYCb7aPxS/RU7TI1y4rkEn1oKmPRjNJLNEXgw7MH2I=
 github.com/onsi/gomega v1.4.2/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
-github.com/opencord/voltha-protos/v4 v4.0.8 h1:/P9IYuWPTp/aabS5n1fakQgHCFNzKjW1JHw3TOLAfKE=
-github.com/opencord/voltha-protos/v4 v4.0.8/go.mod h1:W/OIFIyvFh/C0vchRUuarIsMylEhzCRM9pNxLvkPtKc=
+github.com/opencord/voltha-protos/v4 v4.0.12 h1:x8drb8inaUByjVLFbXSiQwRTU//dfde0MKIHyKb1JMw=
+github.com/opencord/voltha-protos/v4 v4.0.12/go.mod h1:W/OIFIyvFh/C0vchRUuarIsMylEhzCRM9pNxLvkPtKc=
 github.com/opentracing/opentracing-go v1.1.0 h1:pWlfV3Bxv7k65HYwkikxat0+s3pV4bsqf19k25Ur8rU=
 github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
diff --git a/pkg/events/events_proxy.go b/pkg/events/events_proxy.go
index a4b12f7..c4014ee 100644
--- a/pkg/events/events_proxy.go
+++ b/pkg/events/events_proxy.go
@@ -78,6 +78,8 @@
 	header.Category = category
 	if subCategory != nil {
 		header.SubCategory = *subCategory
+	} else {
+		header.SubCategory = voltha.EventSubCategory_NONE
 	}
 	header.Type = eventType
 	header.TypeVersion = eventif.EventTypeVersion
diff --git a/vendor/github.com/opencord/voltha-protos/v4/go/voltha/events.pb.go b/vendor/github.com/opencord/voltha-protos/v4/go/voltha/events.pb.go
index f51a7b7..2dc1826 100644
--- a/vendor/github.com/opencord/voltha-protos/v4/go/voltha/events.pb.go
+++ b/vendor/github.com/opencord/voltha-protos/v4/go/voltha/events.pb.go
@@ -116,11 +116,12 @@
 type EventSubCategory_Types int32
 
 const (
-	EventSubCategory_PON EventSubCategory_Types = 0
-	EventSubCategory_OLT EventSubCategory_Types = 1
-	EventSubCategory_ONT EventSubCategory_Types = 2
-	EventSubCategory_ONU EventSubCategory_Types = 3
-	EventSubCategory_NNI EventSubCategory_Types = 4
+	EventSubCategory_PON  EventSubCategory_Types = 0
+	EventSubCategory_OLT  EventSubCategory_Types = 1
+	EventSubCategory_ONT  EventSubCategory_Types = 2
+	EventSubCategory_ONU  EventSubCategory_Types = 3
+	EventSubCategory_NNI  EventSubCategory_Types = 4
+	EventSubCategory_NONE EventSubCategory_Types = 5
 )
 
 var EventSubCategory_Types_name = map[int32]string{
@@ -129,14 +130,16 @@
 	2: "ONT",
 	3: "ONU",
 	4: "NNI",
+	5: "NONE",
 }
 
 var EventSubCategory_Types_value = map[string]int32{
-	"PON": 0,
-	"OLT": 1,
-	"ONT": 2,
-	"ONU": 3,
-	"NNI": 4,
+	"PON":  0,
+	"OLT":  1,
+	"ONT":  2,
+	"ONU":  3,
+	"NNI":  4,
+	"NONE": 5,
 }
 
 func (x EventSubCategory_Types) String() string {
@@ -1149,85 +1152,86 @@
 func init() { proto.RegisterFile("voltha_protos/events.proto", fileDescriptor_e63e6c07044fd2c4) }
 
 var fileDescriptor_e63e6c07044fd2c4 = []byte{
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+	0x7a, 0xd9, 0x5a, 0x4f, 0xae, 0x3d, 0x51, 0x6f, 0xe8, 0xe5, 0xd7, 0xbd, 0x49, 0xac, 0x6c, 0xe7,
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+	0x00, 0x00,
 }
diff --git a/vendor/modules.txt b/vendor/modules.txt
index f5769bf..62a2d00 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -104,7 +104,7 @@
 github.com/modern-go/concurrent
 # github.com/modern-go/reflect2 v1.0.1
 github.com/modern-go/reflect2
-# github.com/opencord/voltha-protos/v4 v4.0.8
+# github.com/opencord/voltha-protos/v4 v4.0.12
 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