diff --git a/krebs/2configs/mud.nix b/krebs/2configs/mud.nix
index 30f232b64..a53596cc6 100644
--- a/krebs/2configs/mud.nix
+++ b/krebs/2configs/mud.nix
@@ -5,7 +5,7 @@
     MUD_SERVER=''${MUD_SERVER:-127.0.0.1}
     MUD_PORT=''${MUD_PORT:-8080}
 
-    if $(${pkgs.netcat-openbsd}/bin/nc -z "$MUD_SERVER" "$MUD_PORT"); then
+    if $(${pkgs.libressl.nc}/bin/nc -z "$MUD_SERVER" "$MUD_PORT"); then
       ${nvim}/bin/nvim \
         +"let g:instant_username = \"$MUD_NICKNAME\"" \
         +":InstantJoinSession $MUD_SERVER $MUD_PORT" \
diff --git a/krebs/5pkgs/simple/untilport/default.nix b/krebs/5pkgs/simple/untilport/default.nix
index 61bcc2b89..2930fd1eb 100644
--- a/krebs/5pkgs/simple/untilport/default.nix
+++ b/krebs/5pkgs/simple/untilport/default.nix
@@ -13,6 +13,6 @@ pkgs.writeDashBin "untilport" ''
   if [ $# -ne 2 ]; then
     usage
   else
-    until ${pkgs.netcat-openbsd}/bin/nc -z "$@"; do sleep 1; done
+    until ${pkgs.libressl.nc}/bin/nc -z "$@"; do sleep 1; done
   fi
 ''