diff --git a/containers/jug/dev.Dockerfile b/containers/jug/dev.Dockerfile
index 38edc89f5c14b2e7c6aa5922a80e6f62a9853137..7f765b2890861b6dc328f0d6ddd7bd3be965e91d 100644
--- a/containers/jug/dev.Dockerfile
+++ b/containers/jug/dev.Dockerfile
@@ -128,7 +128,7 @@ EOF
 ## ========================================================================================
 FROM spack as builder
 
-## Setup our custom environment (secret mount for write-enabled mirror)
+## 1. Setup our default environment (secret mount for write-enabled mirror)
 COPY --from=spack-environment . /opt/spack-environment/
 ARG ENV=dev
 ENV SPACK_ENV=/opt/spack-environment/${ENV}
@@ -146,7 +146,7 @@ ccache --show-stats
 ccache --zero-stats
 EOF
 
-## Setup our custom environment with custom versions (on top of cached layer)
+## 2. Setup our environment with custom versions (on top of cached layer)
 ARG JUGGLER_VERSION=""
 ARG EICRECON_VERSION=""
 ADD https://eicweb.phy.anl.gov/api/v4/projects/EIC%2Fjuggler/repository/tree?ref=${JUGGLER_VERSION} /tmp/juggler.json
@@ -166,6 +166,7 @@ fi
 if [ -n ${EICRECON_VERSION} ] ; then
   spack rm eicrecon && spack add eicrecon@git.${EICRECON_VERSION}
 fi
+spack concretize --force --fresh
 make --jobs ${jobs} --keep-going --directory /opt/spack-environment SPACK_ENV=${SPACK_ENV} BUILDCACHE_MIRROR="local eics3rw"
 ccache --show-stats
 ccache --zero-stats