diff --git a/default.nix b/default.nix
index 828c0ee8f..4f9e1c59b 100644
--- a/default.nix
+++ b/default.nix
@@ -4,6 +4,7 @@ in
   pkgs.mkShell {
     buildInputs = [
       pkgs.platformio
+      pkgs.python3
       # optional: needed as a programmer i.e. for esp32
       pkgs.avrdude
     ];