diff --git a/nixos/tests/matter-server.nix b/nixos/tests/matter-server.nix
index 5aeffaa97b42..ca4d55a161ce 100644
--- a/nixos/tests/matter-server.nix
+++ b/nixos/tests/matter-server.nix
@@ -1,7 +1,7 @@
 { pkgs, lib, ... }:
 
 let
-  chipVersion = pkgs.python311Packages.home-assistant-chip-core.version;
+  chipVersion = pkgs.python3Packages.home-assistant-chip-core.version;
 in
 
 {