diff --git a/spack.yaml b/spack.yaml
index 6bcbb0e55b3961a9593a088a48df576272a80e18..726a38bc6b4b43582c064fcba2078aecbf370e34 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -12,7 +12,7 @@ spack:
     - biobb-model@4.0.0
     - biobb-structure-checking@3.12.1
     - biobb-structure-utils@4.0.0
-    - hxtorch@8.0-a1
+    - hxtorch@8.0-a3
     - nest@3.6 +sonata
     - neuron@8.2.3 +mpi
     - py-bluepyefe@2.2.18
@@ -53,7 +53,7 @@ spack:
     - py-tvb-multiscale@2.1.0.ebrains
     - py-tvb-storage@2.8.1
     - py-viziphant@0.4.0
-    - pynn-brainscales@8.0-a2
+    - pynn-brainscales@8.0-a3
     - r-rgsl@0.1.1
     - r-sbtabvfgen@0.1
     - r-uqsa@2.2