diff --git a/spack.yaml b/spack.yaml
index 7c5a39536d6a3411de7b8f84a5174d8e314f8523..d7afc34505849b039a70ba7da2918dd662a5fdfa 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -26,5 +26,6 @@ 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
+    # demo for codejam12
     - funniest1022 %gcc@10.3.0
-    #- pynn-brainscales@1.0-rc2 ^log4cxx@0.10.0 ^googletest@1.11.0:+gmock %gcc@10.3.0