diff --git a/Deployments/host_common.nix b/Deployments/host_common.nix
index ff4d8d7..6e12110 100644
--- a/Deployments/host_common.nix
+++ b/Deployments/host_common.nix
@@ -25,11 +25,12 @@
   # Set the system-wide environment
   environment = {
     systemPackages = with pkgs; [
-      byobu # text-based window manager and terminal multiplexer.
-      htop  # interactive process viewer
-      tmux  # Terminal multiplexer required by byobu
-      git   # Distributed version control system
-      powerline-fonts # For zsh themes
+      byobu             # text-based window manager and terminal multiplexer.
+      htop              # interactive process viewer
+      tmux              # Terminal multiplexer required by byobu
+      git               # Distributed version control system
+      powerline-fonts   # For zsh themes
+      lsof              # list open files
     ];
   };