diff --git a/pkgs/by-name/um/umpire/package.nix b/pkgs/by-name/um/umpire/package.nix
index 172c9bd9cb44..458c7bdaec24 100644
--- a/pkgs/by-name/um/umpire/package.nix
+++ b/pkgs/by-name/um/umpire/package.nix
@@ -12,13 +12,13 @@ assert cudaSupport -> cudaPackages != null;
 
 stdenv.mkDerivation rec {
   pname = "umpire";
-  version = "2025.09.0";
+  version = "2025.12.0";
 
   src = fetchFromGitHub {
     owner = "LLNL";
     repo = "umpire";
     tag = "v${version}";
-    hash = "sha256-1lJty4HdjwExBih7Bl3E34LpmDlDlhb0zl9N7MyFj5w=";
+    hash = "sha256-9lGI5SKpDIIzZvsG/yKopfXS1PuHOQB9bwSuML2Xh/8=";
     fetchSubmodules = true;
   };