diff --git a/modules/nix-config/server.nix b/modules/nix-config/server.nix
index 9004e55..5d05dcb 100644
--- a/modules/nix-config/server.nix
+++ b/modules/nix-config/server.nix
@@ -10,7 +10,7 @@ in {
     trustedUsers = [ "root" "@wheel" "@admins" ];
 
     extraOptions = fixPriority ''
-      experimental-features = nix-command flakes ca-references
+      experimental-features = nix-command flakes
       builders-use-substitutes = true
       flake-registry = ${
         pkgs.writeText "null-registry.json" ''{"flakes":[],"version":2}''