diff --git a/pkgs/development/libraries/haskell/network-simple/default.nix b/pkgs/development/libraries/haskell/network-simple/default.nix
index 6795da96450..b838e93f7a3 100644
--- a/pkgs/development/libraries/haskell/network-simple/default.nix
+++ b/pkgs/development/libraries/haskell/network-simple/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "network-simple";
-  version = "0.4";
-  sha256 = "1jw0xd53c0mydh6jm6627c0d8w014r1s46fycdhavnimh7bb77cp";
+  version = "0.4.0.1";
+  sha256 = "113vaxgsfny9iv6hnbywk97qr1y6qkap49p803anakamss4bdmyj";
   buildDepends = [ exceptions network transformers ];
   jailbreak = true;
   meta = {