diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 9a8ce15a..a6ddce66 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -428,6 +428,9 @@ packages:
   prmon:
     require:
     - +plot
+  professor:
+    require:
+    - '@2.3.3:'
   protobuf:
     require:
     - '@32.1'
diff --git a/spack-environment/xl/spack.yaml b/spack-environment/xl/spack.yaml
index 474c392a..8fd3d2e0 100644
--- a/spack-environment/xl/spack.yaml
+++ b/spack-environment/xl/spack.yaml
@@ -75,6 +75,7 @@ spack:
   - podio
   - poppler
   - prmon
+  - professor
   - pyrobird
   - pythia8
   - py-awkward
diff --git a/spack-packages.sh b/spack-packages.sh
index 09cf311c..716114d5 100644
--- a/spack-packages.sh
+++ b/spack-packages.sh
@@ -23,6 +23,7 @@ a7c32f24cd5b69b237dc974804a71326306f4e58
 de97f131df3dbc940151f406afd5c2c1158a660c
 caf013be0ee1594fdbba8feb07ffecc88474a2b0
 75395349957ad785cca50002dffb18bbcb48af27
+dcf9162c02da6fbde05bdbc595561b7956f5381b
 ---
 ## Optional hash table with comma-separated file list
 ## For these commits, the cherry-pick will be restricted to the listed files only.
@@ -43,3 +44,4 @@ read -r -d '' SPACKPACKAGES_CHERRYPICKS_FILES <<- \
 ## de97f131df3dbc940151f406afd5c2c1158a660c: TensorFlow: add v2.21.0
 ## caf013be0ee1594fdbba8feb07ffecc88474a2b0: Add missing xxd dep
 ## 75395349957ad785cca50002dffb18bbcb48af27: py-torch: ensure setuptools is not unnecessarily constrained for 2.10:
+## dcf9162c02da6fbde05bdbc595561b7956f5381b: cargo-c: depends_on pkgconfig