diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6a6d9a804151e00ca7523d87424381d125fd9a76..749c818b517f4e33465a47cba49efc49744d4899 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -124,7 +124,7 @@ spack:concretize:
   script:
     - source ci/stack_env.sh
     - ${STACK_LOCATION}/spack/bin/spack -e ${SPACK_SYSTEM_CONFIG_PATH} config blame
-    - ${STACK_LOCATION}/spack/bin/spack -e ${SPACK_SYSTEM_CONFIG_PATH} concretize
+    - ${STACK_LOCATION}/spack/bin/spack -e ${SPACK_SYSTEM_CONFIG_PATH} concretize --force
   after_script:
     - tar cvzf artifacts_${stack}_${environment}.tgz $stack/environment
   artifacts: