diff --git a/pkgs/development/libraries/haskell/attoparsec-conduit/default.nix b/pkgs/development/libraries/haskell/attoparsec-conduit/default.nix
index 97a6c67f6b27..9c969ed858fd 100644
--- a/pkgs/development/libraries/haskell/attoparsec-conduit/default.nix
+++ b/pkgs/development/libraries/haskell/attoparsec-conduit/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "attoparsec-conduit";
-  version = "0.5.0.2";
-  sha256 = "183p4jd2cfzvv9lhp4w5z4xrb3ki5l1h8kmlwv8523plnk7x7486";
+  version = "0.5.0.3";
+  sha256 = "1n35v7mq93marx6ayja7zfk2hib4whspvysf0a7hjikylp4lfydw";
   buildDepends = [ attoparsec conduit text transformers ];
   meta = {
     homepage = "http://github.com/snoyberg/conduit";