diff --git a/pkgs/servers/klipper/default.nix b/pkgs/servers/klipper/default.nix
index a906059b1970..1338d8c9301a 100644
--- a/pkgs/servers/klipper/default.nix
+++ b/pkgs/servers/klipper/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
     makeWrapper
   ];
 
-  buildInputs = [ (python3.withPackages (p: with p; [ cffi pyserial greenlet jinja2 markupsafe numpy ])) ];
+  buildInputs = [ (python3.withPackages (p: with p; [ can cffi pyserial greenlet jinja2 markupsafe numpy ])) ];
 
   # we need to run this to prebuild the chelper.
   postBuild = ''