diff --git a/roles/iohk.nix b/roles/iohk.nix
index e1f0d67..a57c47e 100644
--- a/roles/iohk.nix
+++ b/roles/iohk.nix
@@ -11,12 +11,14 @@
       "https://hydra.iohk.io"
       "https://iohk.cachix.org"
       "https://mantis-ops.cachix.org"
+      "s3://iohk-vit-bitte/infra/binary-cache/?region=eu-central-1"
     ];
     binaryCachePublicKeys = [
       "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
       "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="
       "iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti+NEO2/nhblbov/8MW7Rqoo="
       "mantis-ops.cachix.org-1:SornDcX8/9rFrpTjU+mAAb26sF8mUpnxgXNjmKGcglQ="
+      "vit-testnet-0:0lvkEoYh+XrBh7pr4bXjsUisUkUxsyLvvWBIJwym/RM="
     ];
     extraOptions = ''
       #repeat = 1   # Ensure reproducibility of builds