diff --git a/pkgs/tools/networking/modem-manager/default.nix b/pkgs/tools/networking/modem-manager/default.nix
index e9d925fb930..badfddd6d50 100644
--- a/pkgs/tools/networking/modem-manager/default.nix
+++ b/pkgs/tools/networking/modem-manager/default.nix
@@ -30,6 +30,8 @@ stdenv.mkDerivation rec {
     export G_TEST_DBUS_DAEMON="${dbus.daemon}/bin/dbus-daemon"
   '';
 
+  enableParallelBuilding = true;
+
   doCheck = true;
 
   meta = with stdenv.lib; {