diff --git a/m/common/base/env.nix b/m/common/base/env.nix
index 2b67f5cc..5efc277d 100644
--- a/m/common/base/env.nix
+++ b/m/common/base/env.nix
@@ -16,6 +16,8 @@
     ncdu
     nix-diff
     nix-index
+    nix-output-monitor
+    nixfmt-tree
     nixos-option
     pciutils
     perf