diff --git a/nix-serve-ng.cabal b/nix-serve-ng.cabal
index 282816f..d575096 100644
--- a/nix-serve-ng.cabal
+++ b/nix-serve-ng.cabal
@@ -69,4 +69,4 @@ executable nix-serve-ng
 
     default-language: Haskell2010
 
-    ghc-options:      -Wall
+    ghc-options:      -Wall -threaded -O2 -rtsopts