diff --git a/pkgs/development/libraries/haskell/attoparsec/default.nix b/pkgs/development/libraries/haskell/attoparsec/default.nix
index 6f923605b67..e7bb666e677 100644
--- a/pkgs/development/libraries/haskell/attoparsec/default.nix
+++ b/pkgs/development/libraries/haskell/attoparsec/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "attoparsec";
-  version = "0.10.2.0";
-  sha256 = "0hvkx63knhxdc06lkv2avz2dblbvn0hhvckfqyr22ls1qrpgz71c";
+  version = "0.10.3.0";
+  sha256 = "1l4cnfgnynrprfvx0p3n6kca8arsmvb1yxb9ir782rrk537jci50";
   buildDepends = [ deepseq text ];
   meta = {
     homepage = "https://github.com/bos/attoparsec";