diff --git a/pkgs/top-level/build-for-release.nix b/pkgs/top-level/build-for-release.nix
index 200e8800633..9372ee37b6f 100644
--- a/pkgs/top-level/build-for-release.nix
+++ b/pkgs/top-level/build-for-release.nix
@@ -168,6 +168,7 @@ let
       sysklogd
       sysvinit
       sysvtools
+      tcpdump
       #tetex
       texLive
       texLiveBeamer