diff --git a/pkgs/tools/networking/network-manager/applet.nix b/pkgs/tools/networking/network-manager/applet.nix
index d516a2b5ee87..4725b0a7d72f 100644
--- a/pkgs/tools/networking/network-manager/applet.nix
+++ b/pkgs/tools/networking/network-manager/applet.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, meson, ninja, intltool, gtk-doc, pkgconfig, networkmanager, gnome3
 , libnotify, libsecret, polkit, isocodes, modemmanager, libxml2, docbook_xsl, docbook_xml_dtd_43
 , mobile-broadband-provider-info, glib-networking, gsettings-desktop-schemas
-, libgudev, jansson, wrapGAppsHook, gobjectIntrospection
+, libgudev, jansson, wrapGAppsHook, gobjectIntrospection, python3
 , libappindicator-gtk3, withGnome ? false }:
 
 let
@@ -31,7 +31,7 @@ in stdenv.mkDerivation rec {
     libappindicator-gtk3
   ] ++ stdenv.lib.optionals withGnome [ gnome3.gcr ]; # advanced certificate chooser
 
-  nativeBuildInputs = [ meson ninja intltool pkgconfig wrapGAppsHook gobjectIntrospection gtk-doc docbook_xsl docbook_xml_dtd_43 libxml2 ];
+  nativeBuildInputs = [ meson ninja intltool pkgconfig wrapGAppsHook gobjectIntrospection python3 gtk-doc docbook_xsl docbook_xml_dtd_43 libxml2 ];
 
   postPatch = ''
     chmod +x meson_post_install.py # patchShebangs requires executable file