diff --git a/pkgs/all-packages.nix b/pkgs/all-packages.nix
index 1c9402d..82ae68e 100644
--- a/pkgs/all-packages.nix
+++ b/pkgs/all-packages.nix
@@ -15,6 +15,7 @@ rec {
   tmx-cups-ppd = pkgs.callPackage ./tmx-cups-ppd.nix { };
   unbted = pkgs.callPackage ./unbted.nix { };
   unmap = pkgs.callPackage ./unmap { };
+  unsup = pkgs.callPackage ./unsup.nix { };
   vpython-jupyter = pkgs.python3Packages.callPackage ./vpython-jupyter.nix {
     inherit jupyterlab-vpython;
   };
diff --git a/pkgs/unsup.nix b/pkgs/unsup.nix
new file mode 100644
index 0000000..aeb37ac
--- /dev/null
+++ b/pkgs/unsup.nix
@@ -0,0 +1,9 @@
+{ fetchurl }:
+fetchurl rec {
+  pname = "unsup";
+  version = "1.2.0-pre1";
+  name = "${pname}-${version}.jar";
+
+  url = "https://git.sleeping.town/unascribed/unsup/releases/download/v${version}/${name}";
+  hash = "sha256-OLTHM6haMNJ34rh7N1eBKjyPB7lS541wjTBSl4aLIoc=";
+}