diff --git a/spack.yaml b/spack.yaml
index 90005916a47a2181191961b9e8fcf3cc0becb398..f2b9e51ed2daa98c9b43d364a2332fc4fc919d66 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -22,7 +22,7 @@ spack:
     - arbor +python +mpi ^python@3:3.9
     - neuron +mpi
     - py-pynn@0.9.6
-    - py-pynn@0.10.0
+    - py-pynn@0.10.0 +mpi
     - tvb-data
     - tvb-library ^py-numba@0.54.0 ^binutils+ld+gold
     - tvb-storage ^binutils+ld+gold