diff --git a/profiles/core.nix b/profiles/core.nix
index eeb3951..29b4178 100644
--- a/profiles/core.nix
+++ b/profiles/core.nix
@@ -113,7 +113,7 @@ in
     trustedUsers = [ "root" "@wheel" ];
 
     extraOptions = ''
-      experimental-features = nix-command flakes
+      experimental-features = nix-command flakes ca-references
     '';
 
   };