diff --git a/home/common/core.nix b/home/common/core.nix
index 80d7bee1..1e726698 100644
--- a/home/common/core.nix
+++ b/home/common/core.nix
@@ -21,7 +21,6 @@
     # networking tools
     mtr   # A network diagnostic tool
     iperf3
-    nmap
     ldns  # replacement of dig, it provide the command `drill`
     aria2 # A lightweight multi-protocol & multi-source command-line download utility
     socat # replacement of openbsd-netcat
@@ -35,12 +34,9 @@
     gnused
     gnutar
     gawk
-    p7zip
-    xz
     zstd
     caddy
     gnupg
-    
 
     # productivity
     hugo