diff --git a/pkgs/development/libraries/qt-5/modules/qtbase.nix b/pkgs/development/libraries/qt-5/modules/qtbase.nix
index 0d0bef342b0..2536e03bc75 100644
--- a/pkgs/development/libraries/qt-5/modules/qtbase.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtbase.nix
@@ -94,6 +94,8 @@ stdenv.mkDerivation {
 
   propagatedNativeBuildInputs = [ lndir ];
 
+  enableParallelBuilding = true;
+
   outputs = [ "bin" "dev" "out" ];
 
   inherit patches;