diff --git a/spack-environment/xl/spack.yaml b/spack-environment/xl/spack.yaml
index e3ca54ac3abe2b357489b2620b8b58ff2db3a95c..0076bf660e073b8c34e06dc44e02b2712be4de4a 100644
--- a/spack-environment/xl/spack.yaml
+++ b/spack-environment/xl/spack.yaml
@@ -38,7 +38,7 @@ spack:
   - fmt
   - gaudi
   - gdb
-  - geant4
+  - geant4 +opengl
   - graphviz
   - hepmc3
   - heppdt