diff --git a/nixbld-etc-nixos/configuration.nix b/nixbld-etc-nixos/configuration.nix
index a421e04..b526c2d 100644
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@@ -98,7 +98,7 @@ in
   # List packages installed in system profile. To search, run:
   # $ nix search wget
   environment.systemPackages = with pkgs; [
-    wget vim git file lm_sensors acpi pciutils psmisc xc3sprog openocd telnet whois zip unzip
+    wget vim git file lm_sensors acpi pciutils psmisc xc3sprog openocd gdb telnet whois zip unzip
     irssi tmux adoptopenjdk-openj9-bin-11 tigervnc xorg.xauth icewm xterm xorg.xsetroot usbutils virtmanager imagemagick jq
   ];