diff --git a/pkgs/development/libraries/haskell/hxt-charproperties/default.nix b/pkgs/development/libraries/haskell/hxt-charproperties/default.nix
index 86605ae55a5..500ed430783 100644
--- a/pkgs/development/libraries/haskell/hxt-charproperties/default.nix
+++ b/pkgs/development/libraries/haskell/hxt-charproperties/default.nix
@@ -2,12 +2,12 @@
 
 cabal.mkDerivation (self: {
   pname = "hxt-charproperties";
-  version = "9.1.1";
-  sha256 = "14xv0q1hh0k8lgispc4fa49cvyg9s7936kp42vr9b0pyd1q4zid8";
+  version = "9.1.1.1";
+  sha256 = "1a8cmswqysd0fpq6bpszav5cqpibnad49mbcswvrwipk28x3j078";
   meta = {
     homepage = "http://www.fh-wedel.de/~si/HXmlToolbox/index.html";
     description = "Character properties and classes for XML and Unicode";
-    license = "unknown";
+    license = self.stdenv.lib.licenses.mit;
     platforms = self.ghc.meta.platforms;
     maintainers = [ self.stdenv.lib.maintainers.andres ];
   };