diff --git a/spack.yaml b/spack.yaml
index 904cf6876b199dd886a2145f9a430d2d0d722a30..6e9692e0a0f55280e2652e5c369a8137faa48fef 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -55,7 +55,7 @@ spack:
     - py-tvb-ext-bucket
     - py-tvb-ext-unicore
     - py-tvb-ext-xircuits@1.1.0
-#    - py-viziphant@0.4.0
+    - py-viziphant@0.4.0
     - pynn-brainscales@9.0-a8
     - r-rgsl@0.1.1
     - r-sbtabvfgen@0.1