diff --git a/machines/core/core.nix b/machines/core/core.nix
index b727499..d191814 100644
--- a/machines/core/core.nix
+++ b/machines/core/core.nix
@@ -22,6 +22,7 @@
     mtr
     nmap
     nmon
+    ouch # de-/compress
     pciutils
     progress
     pv