diff --git a/pkgs/development/tools/castxml/default.nix b/pkgs/development/tools/castxml/default.nix
index 1011f95cce7f..0a455b4d7cdf 100644
--- a/pkgs/development/tools/castxml/default.nix
+++ b/pkgs/development/tools/castxml/default.nix
@@ -8,13 +8,13 @@
 stdenv.mkDerivation rec {
 
   pname   = "CastXML";
-  version = "0.2.0";
+  version = "0.3.4";
 
   src = fetchFromGitHub {
     owner  = pname;
     repo   = pname;
     rev    = "v${version}";
-    sha256 = "1qpgr5hyb692h7l5igmq53m6a6vi4d9qp8ks893cflfx9955h3ip";
+    sha256 = "0ypj67xrgj228myp7l1gsjw1ja97q68nmj98dsd33srmiayqraj4";
   };
 
   nativeBuildInputs = [ cmake ] ++ stdenv.lib.optionals withMan [ pythonPackages.sphinx ];