diff --git a/pkgs/development/libraries/haskell/hxt/default.nix b/pkgs/development/libraries/haskell/hxt/default.nix
index 954a97d20827..db2badaaaf22 100644
--- a/pkgs/development/libraries/haskell/hxt/default.nix
+++ b/pkgs/development/libraries/haskell/hxt/default.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self: {
   pname = "hxt";
-  version = "9.3.1.9";
-  sha256 = "1f0dri6v821cd7d3jkylnmx0y73z7yrnirl3x4jfcx8arscc27q9";
+  version = "9.3.1.7";
+  sha256 = "1dgdq2l9k8v36iahmkxxjmmv955f9gv6lq09nsah9zcscsgm0v2i";
   buildDepends = [
     binary deepseq filepath HUnit hxtCharproperties hxtRegexXmlschema
     hxtUnicode mtl networkUri parsec