diff --git a/modules/nixos/core/nix.nix b/modules/nixos/core/nix.nix
index 16167ee..697fed8 100644
--- a/modules/nixos/core/nix.nix
+++ b/modules/nixos/core/nix.nix
@@ -29,7 +29,7 @@
       flake = flake;
     };
 
-    nix.settings.experimental-features = ["nix-command" "flakes"];
+    nix.settings.experimental-features = ["nix-command" "flakes" "ca-derivations"];
     nix.settings = {
       substituters = [
         "https://cache.nixos.org"