diff --git a/nix/nixosModules/extra/leana.nix b/nix/nixosModules/extra/leana.nix
index 0f884580..075a2160 100644
--- a/nix/nixosModules/extra/leana.nix
+++ b/nix/nixosModules/extra/leana.nix
@@ -30,12 +30,15 @@
   nix.settings = {
     extra-substituters = [
       "https://leana8959.cachix.org"
+      "s3://leana8959-b2/cache?endpoint=s3.eu-central-003.backblazeb2.com"
     ];
     extra-trusted-substituters = [
       "https://leana8959.cachix.org"
+      "s3://leana8959-b2/cache?endpoint=s3.eu-central-003.backblazeb2.com"
     ];
     extra-trusted-public-keys = [
       "leana8959.cachix.org-1:CxQSAp8lcgMv8Me459of0jdXRW2tcyeYRKTiiUq8z0M="
+      "leana8959-b2:6lX6wYtgVeEyuJiVUwye0v+NsW6VihjEdSb1rpW+fsY="
     ];
 
     experimental-features = [