diff --git a/package/default.nix b/package/default.nix
index 33f8395..6c149d6 100644
--- a/package/default.nix
+++ b/package/default.nix
@@ -56,6 +56,7 @@
 		smartmontools      # S.M.A.R.T. tools.
 		sqlite             # Serverless file-based database engine.
 		sshfs              # Ssh client.
+		tcpdump            # Sniff tool.
 		testdisk           # Apps to recover data from drives.
 		tmux               # Terminal multiplexor.
 		tree               # Show directory stricture as a tree.