diff --git a/home.nix b/home.nix
index 740a02a..4483504 100644
--- a/home.nix
+++ b/home.nix
@@ -59,14 +59,14 @@
     #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
-    #nmap # A utility for network discovery and security auditing
+    nmap # A utility for network discovery and security auditing
     #ipcalc  # it is a calculator for the IPv4/v6 addresses
 
     # misc
     #cowsay
     #file
     #which
-    #tree
+    tree
     #gnused
     #gnutar
     #gawk
@@ -86,6 +86,7 @@
     btop  # replacement of htop/nmon
     iotop # io monitoring
     iftop # network monitoring
+    htop # the classic
 
     # system call monitoring
     strace # system call monitoring
@@ -142,7 +143,7 @@
         family = "IosevkaTerm Nerd Font";
         style = "Bold Italic";
       };
-      size = 16;
+      size = 20;
   };
 
 #      font = {