diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b852de81b1d7d0a3b75cce8e05678a8b2101273b..c104797b44f69ef8231cf1fd172251c490e5bab7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -40,6 +40,7 @@ variables:
     0a952f8b7bf6f70009dd5821bccbaf9170c73d07
     f050b1cf7835fd31992b020e1061c52294ff7330
     a419ffcf501134faed24253ccc83e6c71f9659f9
+    c3e41153ac92f6ef92414024a8386d4ceec2615c
   ## Ref: https://github.com/spack/spack/commit/[hash]
   ## [hash]: [description]
   ## b5ef5c2eb5145020f9de1bcb964626ce6ac2d02e: geant4: version bumps for Geant4 11.1.0
@@ -70,6 +71,7 @@ variables:
   ## 0a952f8b7bf6f70009dd5821bccbaf9170c73d07: docs updates for spack env depfile
   ## f050b1cf7835fd31992b020e1061c52294ff7330: depfile: variable with all identifiers
   ## a419ffcf501134faed24253ccc83e6c71f9659f9: osg-ca-certs: igtf link should point to version, not 'current'
+  ## c3e41153ac92f6ef92414024a8386d4ceec2615c: Package requirements: allow single specs in requirement lists
 
   ## EIC spack organization and repository, e.g. eic/eic-spack
   EICSPACK_ORGREPO: "eic/eic-spack"
diff --git a/containers/jug/dev.Dockerfile b/containers/jug/dev.Dockerfile
index 39c69924a9c9c39a156a5636bebbeac7ea27ef7d..6627657223b244013697a03d7eafa73e20141f01 100644
--- a/containers/jug/dev.Dockerfile
+++ b/containers/jug/dev.Dockerfile
@@ -44,12 +44,12 @@ RUN git clone https://github.com/${SPACK_ORGREPO}.git ${SPACK_ROOT}     \
 SHELL ["docker-shell"]
 
 ARG jobs=64
-RUN declare -A arch=(                                                   \
+RUN declare -A target=(                                                 \
       ["linux/amd64"]="x86_64"                                          \
       ["linux/arm64"]="aarch64"                                         \
     )                                                                   \
- && arch=${arch[${TARGETPLATFORM}]}                                     \
- && spack config --scope site add "packages:all:require:arch=${arch}"   \
+ && target=${target[${TARGETPLATFORM}]}                                 \
+ && spack config --scope site add "packages:all:require:[target=${target}]" \
  && spack config blame packages                                         \
  && spack config --scope site add "config:suppress_gpg_warnings:true"   \
  && spack config --scope site add "config:build_jobs:${jobs}"           \