diff --git a/spack.yaml b/spack.yaml
index 55e5f2506a9df1cfeb4b3c2be319f192a642b0e7..dd0c326ca4884f3d778b3d39d8ea8251d99e9f06 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -51,8 +51,8 @@ spack:
     - py-lfpy@2.2.6
     - py-elephant
     - py-frites
-    - biobb-common
-    - biobb-md
+    #- biobb-common
+    #- biobb-md
     # demo for codejam12
     #- funniest1022
   concretization: together