diff --git a/systems/aarch64-darwin/m4/default.nix b/systems/aarch64-darwin/m4/default.nix
index 6b3de20..0946d6f 100644
--- a/systems/aarch64-darwin/m4/default.nix
+++ b/systems/aarch64-darwin/m4/default.nix
@@ -41,6 +41,7 @@ with lib.metacfg;
     claude-code
     opencode
     metacfg.pi
+    defuddle-cli
     dnsmasq
     gh
     imagemagick