diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 9331e9e7..c700a560 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -312,6 +312,7 @@ packages:
   py-torch:
     require:
     - '@2.1.0'
+    - -mkldnn
   py-uproot:
     require:
     - '@5.0.5'