diff --git a/pkgs/development/ocaml-modules/tyxml/default.nix b/pkgs/development/ocaml-modules/tyxml/default.nix
index 648f0a9cd17..2222af8d181 100644
--- a/pkgs/development/ocaml-modules/tyxml/default.nix
+++ b/pkgs/development/ocaml-modules/tyxml/default.nix
@@ -1,14 +1,14 @@
-{stdenv, fetchurl, ocaml, findlib, ocaml_oasis, camlp4}:
+{stdenv, fetchurl, ocaml, findlib, ocaml_oasis, camlp4, uutf}:
 
 stdenv.mkDerivation {
-  name = "tyxml-3.1.1";
+  name = "tyxml-3.3.0";
 
   src = fetchurl {
-    url = http://github.com/ocsigen/tyxml/archive/3.1.1.tar.gz;
-    sha256 = "1r8im382r68kn8qy0857nv3y7h42i6ajyclxzmigfai7v2xdd05z";
+    url = http://github.com/ocsigen/tyxml/archive/3.3.0.tar.gz;
+    sha256 = "0r1hj8qy91i48nd7wj0x2dqrgspqrry5awraxl4pl10vh0mn6pk7";
     };
 
-  buildInputs = [ocaml findlib ocaml_oasis camlp4];
+  buildInputs = [ocaml findlib ocaml_oasis camlp4 uutf];
 
   createFindlibDestdir = true;