diff --git a/pkgs/development/libraries/haskell/postgresql-libpq/default.nix b/pkgs/development/libraries/haskell/postgresql-libpq/default.nix
index d630f063391..40acabad1cd 100644
--- a/pkgs/development/libraries/haskell/postgresql-libpq/default.nix
+++ b/pkgs/development/libraries/haskell/postgresql-libpq/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "postgresql-libpq";
-  version = "0.9.0.0";
-  sha256 = "09bi0npvly02zjhp463bmzm1n8w1cqsln676z82xi2in86317pv3";
+  version = "0.9.0.1";
+  sha256 = "0fdz9pkmrajqm026s6d5ib9kqg5ph93fw7l2xrgf22zagl53rzx3";
   extraLibraries = [ postgresql ];
   meta = {
     homepage = "http://github.com/lpsmith/postgresql-libpq";