diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 22778d4a2c0daeab4238499c820a8ca740aad559..59f66227f2e230b690ad40a66688a07aa3ccf515 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -52,7 +52,8 @@ packages:
   celeritas:
     require:
     - '@0.5.0'
-    - +geant4 +hepmc3 +root +vecgeom
+    - +geant4 +hepmc3  +vecgeom
+    - one_of: [~cuda +root, +cuda ~root]
   cernlib:
     require:
     - '@2022.11.08.0-free'