diff --git a/pkgs/development/libraries/haskell/blaze-builder-conduit/default.nix b/pkgs/development/libraries/haskell/blaze-builder-conduit/default.nix
index a9568dde496..89ff67fac37 100644
--- a/pkgs/development/libraries/haskell/blaze-builder-conduit/default.nix
+++ b/pkgs/development/libraries/haskell/blaze-builder-conduit/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "blaze-builder-conduit";
-  version = "0.5.0.3";
-  sha256 = "0dbymh29zg0bvhlmai5s6qiqypx46hmlg375jpcq1597vzaanwnw";
+  version = "1.0.0";
+  sha256 = "15q0b0k5dxrp9cw2b4qf9mmjwz1mmxrn3890df5rc9z6yajajrc6";
   buildDepends = [ blazeBuilder conduit text transformers ];
   meta = {
     homepage = "http://github.com/snoyberg/conduit";