diff --git a/modules/cli.nix b/modules/cli.nix
index 2b1484f..eb25af4 100644
--- a/modules/cli.nix
+++ b/modules/cli.nix
@@ -36,6 +36,7 @@ in
     tcpdump
     rsync
     nixpkgs-fmt
+    nix-index
 
     (writeShellScriptBin "dirt" "while sleep 1; do grep '^Dirty:' /proc/meminfo ; done")