diff --git a/Makefile b/Makefile
index 938faa1..7ffcaa0 100644
--- a/Makefile
+++ b/Makefile
@@ -21,11 +21,11 @@
 VERSION                    ?= $(shell cat ./VERSION)
 
 # tool containers
-VOLTHA_TOOLS_VERSION ?= 2.0.0
+VOLTHA_TOOLS_VERSION ?= 2.3.1
 
 GO                = docker run --rm --user $$(id -u):$$(id -g) -v ${CURDIR}:/app $(shell test -t 0 && echo "-it") -v gocache:/.cache -v gocache-${VOLTHA_TOOLS_VERSION}:/go/pkg voltha/voltha-ci-tools:${VOLTHA_TOOLS_VERSION}-golang go
 GO_JUNIT_REPORT   = docker run --rm --user $$(id -u):$$(id -g) -v ${CURDIR}:/app -i voltha/voltha-ci-tools:${VOLTHA_TOOLS_VERSION}-go-junit-report go-junit-report
-GOCOVER_COBERTURA = docker run --rm --user $$(id -u):$$(id -g) -v ${CURDIR}:/app -i voltha/voltha-ci-tools:${VOLTHA_TOOLS_VERSION}-gocover-cobertura gocover-cobertura
+GOCOVER_COBERTURA = docker run --rm --user $$(id -u):$$(id -g) -v ${CURDIR}:/app/src/github.com/opencord/voltha-lib-go/v4 -i voltha/voltha-ci-tools:${VOLTHA_TOOLS_VERSION}-gocover-cobertura gocover-cobertura
 GOLANGCI_LINT     = docker run --rm --user $$(id -u):$$(id -g) -v ${CURDIR}:/app $(shell test -t 0 && echo "-it") -v gocache:/.cache -v gocache-${VOLTHA_TOOLS_VERSION}:/go/pkg voltha/voltha-ci-tools:${VOLTHA_TOOLS_VERSION}-golangci-lint golangci-lint
 
 .PHONY: local-protos
diff --git a/VERSION b/VERSION
index 4d54dad..3704213 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.0.2
+4.0.3-dev