diff --git a/pkgs/development/libraries/haskell/pipes-network/default.nix b/pkgs/development/libraries/haskell/pipes-network/default.nix
index fcd194026484..95345e0513e9 100644
--- a/pkgs/development/libraries/haskell/pipes-network/default.nix
+++ b/pkgs/development/libraries/haskell/pipes-network/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "pipes-network";
-  version = "0.6.3";
-  sha256 = "09gihca0hinq3sqsx9753gmas6g22pg792ag6ckdw5z3607razrg";
+  version = "0.6.4";
+  sha256 = "1wabyv5j4q0wxiz8ry7dq3amlvfh4r0721pd2lksx7hj3a5qzm2p";
   buildDepends = [
     network networkSimple pipes pipesSafe transformers
   ];