diff --git a/roles/iohk.nix b/roles/iohk.nix
index 9d17f22..0114687 100644
--- a/roles/iohk.nix
+++ b/roles/iohk.nix
@@ -13,9 +13,14 @@
   nix.binaryCaches = [
     "https://cache.nixos.org"
     "https://hydra.iohk.io"
+    "https://iohk.cachix.org"
+    "https://mantis-ops.cachix.org"
   ];
   nix.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="
   ];
 
   # Set the system-wide environment