diff --git a/spack.yaml b/spack.yaml
index aefab57a3497c3b7ca831453308a4fa568d9ebb9..d33e0b9144c76b468c7edcf4ef2a1893266a4311 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -26,4 +26,4 @@ spack:
     - py-formencode %gcc@10.3.0
     - tvb-framework ^binutils+ld+gold %gcc@10.3.0
     - meta-brainscales %gcc@10.3.0
-    - pynn-brainscales@1.0-rc2 ^log4cxx@0.10.0 ^googletest@1.11.0:+gmock %gcc@10.3.0
+    #- pynn-brainscales@1.0-rc2 ^log4cxx@0.10.0 ^googletest@1.11.0:+gmock %gcc@10.3.0