diff --git a/services/forty_two/irc.nix b/services/forty_two/irc.nix
index 0347841..15b6539 100644
--- a/services/forty_two/irc.nix
+++ b/services/forty_two/irc.nix
@@ -11,8 +11,8 @@ in
 {
   config = lib.mkIf cfg {
     environment.systemPackages = with pkgs; [
-      llvmPackages.clang
-      llvmPackages.clang-tools
+      llvmPackages_21.clang
+      llvmPackages_21.clang-tools
       gnumake
     ];
     users = {