diff --git a/pkgs/development/libraries/haskell/polyparse/default.nix b/pkgs/development/libraries/haskell/polyparse/default.nix
index 24425c6b5e65..45b994026c2f 100644
--- a/pkgs/development/libraries/haskell/polyparse/default.nix
+++ b/pkgs/development/libraries/haskell/polyparse/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "polyparse";
-  version = "1.8";
-  sha256 = "08nr22r87q2yxxlcpvf35pkq56b4k3f1fzj3cvjnr7137k7c7ywn";
+  version = "1.9";
+  sha256 = "12khjhv1dvs4j1jyh3law7m1gmkad8s6q7clh7w6l5ll2n1dc4lz";
   buildDepends = [ text ];
   meta = {
     homepage = "http://code.haskell.org/~malcolm/polyparse/";