diff --git a/.justfile b/.justfile
index 67f17a9..faa9443 100644
--- a/.justfile
+++ b/.justfile
@@ -45,5 +45,19 @@ switch *args:
   @just build {{args}}
   @gum confirm && just rebuild switch {{args}}
 
+[private]
+gc:
+  nix-collect-garbage -d
+  nix-store --optimise
+
+[macos]
+clean:
+  sudo nix-env --profile /nix/var/nix/profiles/system --delete-generations old
+  @just gc
+
+[linux]
+clean:
+  @just gc
+
 fetch:
   @nix shell nixpkgs\#onefetch nixpkgs\#scc -c sh -c "onefetch --true-color never --no-bots -d lines-of-code && scc --no-cocomo ."