diff --git a/Dockerfile b/Dockerfile
index 37ffdac..7f87538 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,10 +23,10 @@
 # a Docker tag from the string in file container-tag.yaml
 
 #FROM golang:1.12.1 as rtmgrbuild
-FROM nexus3.o-ran-sc.org:10004/bldr-ubuntu18-c-go:7-u18.04 as rtmgrbuild
+FROM nexus3.o-ran-sc.org:10004/o-ran-sc/bldr-ubuntu18-c-go:8-u18.04 as rtmgrbuild
 
 # Install RMr shared library
-ARG RMRVERSION=4.0.2
+ARG RMRVERSION=4.0.5
 RUN wget --content-disposition https://packagecloud.io/o-ran-sc/release/packages/debian/stretch/rmr_${RMRVERSION}_amd64.deb/download.deb && dpkg -i rmr_${RMRVERSION}_amd64.deb && rm -rf rmr_${RMRVERSION}_amd64.deb
 # Install RMr development header files
 RUN wget --content-disposition https://packagecloud.io/o-ran-sc/release/packages/debian/stretch/rmr-dev_${RMRVERSION}_amd64.deb/download.deb && dpkg -i rmr-dev_${RMRVERSION}_amd64.deb && rm -rf rmr-dev_${RMRVERSION}_amd64.deb