diff --git a/nixos/configurations.nix b/nixos/configurations.nix
index 3beeadd..f4ed6c3 100644
--- a/nixos/configurations.nix
+++ b/nixos/configurations.nix
@@ -15,9 +15,14 @@ let adapterModule = {
     nixpkgs.flake = nixpkgs;
     dadada.flake = self;
   };
+  nix.binaryCaches = [
+    https://cache.nixos.org/
+    https://nix-community.cachix.org/
+  ];
   nix.binaryCachePublicKeys = [
     "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
     "gorgon:eEE/PToceRh34UnnoFENERhk89dGw5yXOpJ2CUbfL/Q="
+    "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
   ];
   nix.requireSignedBinaryCaches = true;
   nix.useSandbox = true;