diff --git a/docker/Dockerfile b/docker/Dockerfile
index 74e878d2e..c2094bf8b 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -24,10 +24,12 @@ ARG GIT_REVISION
 ARG NETWORK_NIM_FLAGS
 ARG MARCH_NIM_FLAGS
 
+# TODO: remove the double update after devel is merged into master
 RUN cd /root/nim-beacon-chain \
  && git fetch \
  && git reset --hard ${GIT_REVISION} \
  && make -j$(nproc) update \
+ && make -j$(nproc) update \
  && make LOG_LEVEL=TRACE NIMFLAGS="-d:insecure -d:testnet_servers_image ${NETWORK_NIM_FLAGS} ${MARCH_NIM_FLAGS}" beacon_node
 
 # --------------------------------- #
diff --git a/vendor/nimbus-build-system b/vendor/nimbus-build-system
index 4ce1ae394..1c9feb0d6 160000
--- a/vendor/nimbus-build-system
+++ b/vendor/nimbus-build-system
@@ -1 +1 @@
-Subproject commit 4ce1ae394ad34faf9922a6c5345ecf8929ab3c25
+Subproject commit 1c9feb0d66fbd8e55560543aee96d3e0d33c6c0f