diff --git a/pkgs/development/libraries/java/saxon/default.nix b/pkgs/development/libraries/java/saxon/default.nix
index 0892bd2ddc7a..3d67b6cb515d 100644
--- a/pkgs/development/libraries/java/saxon/default.nix
+++ b/pkgs/development/libraries/java/saxon/default.nix
@@ -189,11 +189,11 @@ in
 
   saxon_12-he = common rec {
     pname = "saxon-he";
-    version = "12.8";
+    version = "12.9";
     jar = "saxon-he-${version}";
     src = fetchurl {
       url = github.downloadUrl version;
-      hash = "sha256-K6hRrseSW4giCBgsSMk2IwIF1VjjNWNrvkZia9gANZg=";
+      hash = "sha256-8olb7zeUESxlChWL4nw5qG6IwXF+u44OiAZ9HwdjXRI=";
     };
     updateScript = github.updateScript version;
     description = "Processor for XSLT 3.0, XPath 3.1, and XQuery 3.1";