diff --git a/spack.yaml b/spack.yaml
index 1d557571ca051e3ef0ed99454f38cb913e0cb801..1b425ecb847d22f575d01b6f830e9e657608e96c 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -29,8 +29,8 @@ spack:
     - py-tvb-library
     - py-tvb-storage
     - py-tvb-framework
-    #- pynn-brainscales@4.0-a4
-    #- hxtorch@4.0-a4
+    - pynn-brainscales@4.0-a4
+    - hxtorch@4.0-a4
     - py-neo
     - py-hdmf
     - py-pynwb