diff --git a/spack.yaml b/spack.yaml
index dd92ba4d0492dbb1ad7b92263fa51e7793483fc9..1ea4989ee9c478e43021f0b634c56582232c90ed 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -28,7 +28,7 @@ spack:
     - py-formencode %gcc@10.3.0
     - tvb-framework ^binutils+ld+gold %gcc@10.3.0
     - meta-brainscales %gcc@10.3.0
-    - pynn-brainscales@2.0-rc0 ^log4cxx@0.10.0 ^googletest@1.11.0:+gmock %gcc@10.3.0
+    #- pynn-brainscales@2.0-rc0 ^log4cxx@0.10.0 ^googletest@1.11.0:+gmock %gcc@10.3.0
     # demo for codejam12
     - funniest1022 %gcc@10.3.0
     # NRP