diff --git a/containers/jug/dev.Dockerfile b/containers/jug/dev.Dockerfile
index bb9481e5177eb601e1381a2caa2c619e99da785b..4b2c241bea37eab4b7191dce59432e357b5f0ba3 100644
--- a/containers/jug/dev.Dockerfile
+++ b/containers/jug/dev.Dockerfile
@@ -48,7 +48,7 @@ echo -e "\n  view: false" >> ${SPACK_ENV}/spack.yaml
 spack env activate --dir ${SPACK_ENV}
 spack external find --not-buildable --scope env:${SPACK_ENV} --path /usr/local/cuda/bin cuda
 spack external find --not-buildable --scope env:${SPACK_ENV} llvm
-spack concretize --fresh --force
+spack concretize --force
 EOF
 
 
@@ -166,7 +166,7 @@ if [ "${JUGGLER_VERSION}" != "df87bf1f8643afa8e80bece9d36d6dc26dfe8132" ] ; then
   sed -i "/# JUGGLER_VERSION$/ s/@[^' ]*/@git.${JUGGLER_VERSION}=main/" /opt/spack-environment/packages.yaml
   spack deconcretize -y --all juggler
 fi
-spack concretize --fresh --force
+spack concretize --force
 EOF
 
 
diff --git a/spack-environment/concretizer.yaml b/spack-environment/concretizer.yaml
index 5007da8e076b7bcf5e8c178e628f16b7cc3314c7..7f5c05c6e0947351e96cba1fbc2d12b55ab071a9 100644
--- a/spack-environment/concretizer.yaml
+++ b/spack-environment/concretizer.yaml
@@ -6,5 +6,8 @@
 #   when_possible and consider duplicate dependencies an error.
 #
 concretizer:
-  reuse: false
+  reuse:
+    roots: true
+    from:
+    - type: local
   unify: when_possible