diff --git a/spack.yaml b/spack.yaml
index a337fce2dd1580176bc62b68eb321fb0b905aed5..43b12d467fd925a0a58fe1d65837ec87f72af0b1 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -32,11 +32,11 @@ spack:
     - [$oses]
 
   mirrors:
-    mirror: s3://spack-public/mirror
-    cloud_gitlab: https://mirror.spack.io
+    mirror: https://spack-llnl-mirror.s3-us-west-2.amazonaws.com/
+    #cloud_gitlab: https://mirror.spack.io
     #local_something: /builds/emuller/brainscales-spack-test/local_mirror
     # build_cache/ gets added
-    #hacky_cache: https://brainscales-r.kip.uni-heidelberg.de:7443/nmpi/tmp
+    hacky_cache: https://brainscales-r.kip.uni-heidelberg.de:7443/nmpi/tmp
 
   gitlab-ci:
     bootstrap: