diff --git a/pkgs/flask-url-map-serializer/default.nix b/pkgs/flask-url-map-serializer/default.nix
new file mode 100644
index 0000000..323c372
--- /dev/null
+++ b/pkgs/flask-url-map-serializer/default.nix
@@ -0,0 +1,36 @@
+{
+  lib,
+  fetchFromGitHub,
+  buildPythonPackage,
+  setuptools,
+  flask,
+  click,
+}:
+
+buildPythonPackage rec {
+  pname = "flask-url-map-serializer";
+  version = "0.0.1";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "indico";
+    repo = "js-flask-urls";
+    rev = "refs/tags/flask-urls@${version}";
+    hash = "sha256-rhfP1Co+xXBdNfhtkJs/T3ZI4Mj4UnNujnyI2VA3X5A=";
+  };
+
+  sourceRoot = "${src.name}/flask-cli";
+
+  build-system = [ setuptools ];
+
+  dependencies = [
+    flask
+    click
+  ];
+
+  meta = {
+    description = "Dumps the URL map of a flask app to a JSON file";
+    homepage = "https://github.com/indico/js-flask-urls";
+    license = lib.licenses.mit;
+  };
+}