diff --git a/nix/configuration/configuration.nix b/nix/configuration/configuration.nix
index 1655469..286918c 100644
--- a/nix/configuration/configuration.nix
+++ b/nix/configuration/configuration.nix
@@ -161,6 +161,7 @@
     lsof
     doas-sudo-shim # To support --use-remote-sudo for remote builds
     dmidecode # Read SMBIOS information.
+    ipcalc
   ];
 
   services.openssh = {