diff --git a/spack-environment/dev/spack.yaml b/spack-environment/dev/spack.yaml
index 4eccde66d3b230d02a1f499f8cac6b8623d3bdea..b80e2dc2b2884f621f0103628534322910975135 100644
--- a/spack-environment/dev/spack.yaml
+++ b/spack-environment/dev/spack.yaml
@@ -52,8 +52,9 @@ spack:
     - pythia8@8.309 +fastjet
     - python@3.10.10
     - py-awkward@2.1.1
-    - py-dask@2021.6.2
     - py-boto3@1.26.26
+    - py-dask@2021.6.2
+    - py-deepdiff@6.3.0
     - py-ipython@8.11.0
     - py-jinja2@3.1.2
     - py-jinja2-cli@0.8.2