diff --git a/pkgs/development/libraries/haskell/network-fancy/default.nix b/pkgs/development/libraries/haskell/network-fancy/default.nix
index 8e0cf757834..21c3e43d588 100644
--- a/pkgs/development/libraries/haskell/network-fancy/default.nix
+++ b/pkgs/development/libraries/haskell/network-fancy/default.nix
@@ -1,14 +1,16 @@
+# This file was auto-generated by cabal2nix. Please do NOT edit manually!
+
 { cabal }:
 
 cabal.mkDerivation (self: {
   pname = "network-fancy";
-  version = "0.1.5.2";
-  sha256 = "039yrrir17sphkzarwl7hncj7fb4x471mh2lvpqixl3a6nij141c";
+  version = "0.2.1";
+  sha256 = "1n8i7vyg1csdxxq7nip84ydkx3c8gykmqxg27ir0mmgj3p1jb42c";
+  doCheck = false;
   meta = {
     homepage = "http://github.com/taruti/network-fancy";
     description = "Networking support with a cleaner API";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
   };
-  preConfigure = ''substituteInPlace Setup.hs --replace '-> rt' '-> return ()' '';
 })