diff --git a/modules/linuxcnc.nix b/modules/linuxcnc.nix
index af7c2fe..e1f9955 100644
--- a/modules/linuxcnc.nix
+++ b/modules/linuxcnc.nix
@@ -8,6 +8,8 @@ let
       ln -s ${pkgs.linuxcnc-ethercat}/bin/* $out/bin/
       ln -s ${pkgs.linuxcnc-ethercat}/lib/linuxcnc/modules/* $out/lib/linuxcnc/modules/
       ln -s ${pkgs.linuxcnc-ethercat}/share/linuxcnc-ethercat $out/share/
+
+      ln -s ${pkgs.hal-cia402}/lib/linuxcnc/modules/* $out/lib/linuxcnc/modules/
     '';
   });
   linuxcncEnv = pkgs.buildEnv {