diff --git a/roles/iohk.nix b/roles/iohk.nix
index 39a7a6a..410d483 100644
--- a/roles/iohk.nix
+++ b/roles/iohk.nix
@@ -10,7 +10,6 @@
       "https://cache.nixos.org"
       "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 = [