diff --git a/spack-environment/xl/spack.yaml b/spack-environment/xl/spack.yaml
index 6e9d8fdf75ab62faa81707701ac9b656a47b933f..e73f947a89d2c4ee468cbaaa7132d78b4e7cd076 100644
--- a/spack-environment/xl/spack.yaml
+++ b/spack-environment/xl/spack.yaml
@@ -102,6 +102,7 @@ spack:
   - snakemake
   - spdlog
   - stow
+  - strace
   - valgrind
   - xrootd
   - xeyes