VOL-3501 Refeactoring of code for event handling

Change-Id: I2d8e4bd3c6b711bc2fc3ef91e6f372ab80d2beb4
diff --git a/go.mod b/go.mod
index b0c5584..7566ae1 100644
--- a/go.mod
+++ b/go.mod
@@ -9,8 +9,8 @@
 	github.com/google/gopacket v1.1.17
 	github.com/looplab/fsm v0.1.0
 	github.com/opencord/omci-lib-go v0.13.4
-	github.com/opencord/voltha-lib-go/v4 v4.0.3
-	github.com/opencord/voltha-protos/v4 v4.0.5
+	github.com/opencord/voltha-lib-go/v4 v4.0.4
+	github.com/opencord/voltha-protos/v4 v4.0.6
 	github.com/stretchr/testify v1.6.1
 	google.golang.org/grpc v1.25.1 // indirect
 )