diff --git a/pkgs/applications/science/math/weka/default.nix b/pkgs/applications/science/math/weka/default.nix
index 6a692e07c433..a59746dcaeba 100644
--- a/pkgs/applications/science/math/weka/default.nix
+++ b/pkgs/applications/science/math/weka/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "weka-${version}";
-  version = "3.8.2";
+  version = "3.9.2";
 
   src = fetchurl {
     url = "mirror://sourceforge/weka/${stdenv.lib.replaceChars ["."]["-"] name}.zip";
-    sha256 = "0p353lhhcv3swwn1bl64vkyjk480vv9ghhlyqjxiar4p3xifjayb";
+    sha256 = "0zwmhspmqb0a7cm6k6i0s6q3w19ws1g9dx3cp2v3g3vsif6cdh31";
   };
 
   buildInputs = [ unzip ];