diff --git a/pkgs/development/libraries/haskell/http-attoparsec/default.nix b/pkgs/development/libraries/haskell/http-attoparsec/default.nix
index 9a7ad41de57..47ecc46b63f 100644
--- a/pkgs/development/libraries/haskell/http-attoparsec/default.nix
+++ b/pkgs/development/libraries/haskell/http-attoparsec/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "http-attoparsec";
-  version = "0.1.0";
-  sha256 = "1ncdjzgb5kv20y9kps4nawvbwaqnfil9g552if638vv8hag8cwq9";
+  version = "0.1.1";
+  sha256 = "12l892fix11mrvm10awwvv31y59q5rb6gb0sqjp6l4p4ym9ngqa3";
   buildDepends = [ attoparsec httpTypes ];
   meta = {
     homepage = "https://github.com/tlaitinen/http-attoparsec";