diff --git a/pkgs/games/vassal/default.nix b/pkgs/games/vassal/default.nix
index 9055a86d506a..c7971c7d3874 100644
--- a/pkgs/games/vassal/default.nix
+++ b/pkgs/games/vassal/default.nix
@@ -9,11 +9,11 @@
 
 stdenv.mkDerivation rec {
   pname = "VASSAL";
-  version = "3.6.12";
+  version = "3.6.13";
 
   src = fetchzip {
     url = "https://github.com/vassalengine/vassal/releases/download/${version}/${pname}-${version}-linux.tar.bz2";
-    sha256 = "sha256-NSGadwVn1/nvHiJFENBPDsOUPwesunZMsvn+ms7u4Sw=";
+    sha256 = "sha256-5YswOh2jnOafctp7q8INtIqQwx1ugGm0QP9vDfal7t0=";
   };
 
   buildInputs = [