diff --git a/nix/pkgs/home-assistant-chip/default.nix b/nix/pkgs/home-assistant-chip/default.nix
index 01e6b0f1a4..0ce706620c 100644
--- a/nix/pkgs/home-assistant-chip/default.nix
+++ b/nix/pkgs/home-assistant-chip/default.nix
@@ -20,6 +20,7 @@
 , glib
 , ninja
 , pyproject-hooks
+, cython_0
 , autoPatchelfHook
 
 , aenum
@@ -289,6 +290,8 @@ rec {
       pygobject3
 
       clusters
+
+      cython_0
     ];
 
     buildInputs = [