diff --git a/default.nix b/default.nix
index a38b7c5..052acbb 100644
--- a/default.nix
+++ b/default.nix
@@ -1,5 +1,5 @@
-{ python }:
-with python.pkgs;
+{ python3 }:
+with python3.pkgs;
 buildPythonApplication rec {
   name = "mqtt-dash";
   src = ./.;