diff --git a/pkgs/tools/misc/plantuml-server/default.nix b/pkgs/tools/misc/plantuml-server/default.nix
index dc7fe1627a1c..689a502efde1 100644
--- a/pkgs/tools/misc/plantuml-server/default.nix
+++ b/pkgs/tools/misc/plantuml-server/default.nix
@@ -1,14 +1,14 @@
 { lib, stdenv, fetchurl, nixosTests }:
 
 let
-  version = "1.2023.12";
+  version = "1.2023.13";
 in
 stdenv.mkDerivation rec {
   pname = "plantuml-server";
   inherit version;
   src = fetchurl {
     url = "https://github.com/plantuml/plantuml-server/releases/download/v${version}/plantuml-v${version}.war";
-    sha256 = "sha256-RHlv0kVJvAInLAd70001OTcJuh3Qg2C9o+//zR37zxc=";
+    sha256 = "sha256-8MfInkDJ57Usm4KTESwEig/X9xfoxXTf+oA9F3bgMT0=";
   };
 
   dontUnpack = true;