diff --git a/backend/setup-sigma-versions.sh b/backend/setup-sigma-versions.sh
index 552afde..fb218d3 100755
--- a/backend/setup-sigma-versions.sh
+++ b/backend/setup-sigma-versions.sh
@@ -17,5 +17,12 @@ for VERSION in $SIGMA_VERSIONS; do
 
     # remove if installed because of https://github.com/redsand/pySigma-backend-hawk/issues/1
     uv -q remove pySigma-backend-hawk
+
+    # TODO: some problems with kusto backend, disable for now
+    uv -q remove pySigma-backend-kusto
+
+    # remove unused pyparsing imports in older version, see https://github.com/SigmaHQ/pySigma/pull/289#issuecomment-2410153076
+    find ./ -iwholename "*sigma/conversion/base.py" -exec sed -i "/from pyparsing import Set/d" {} +
+    find ./ -iwholename "*sigma/exceptions.py" -exec sed -i "/from pyparsing import List/d" {} +
     cd ..
 done
diff --git a/frontend/frontend.py b/frontend/frontend.py
index 4c2bd06..4de282c 100755
--- a/frontend/frontend.py
+++ b/frontend/frontend.py
@@ -6,52 +6,63 @@
 from flask import Flask, render_template, request, jsonify
 
 app = Flask(__name__)
-sigma_versions = [os.path.basename(it.path) for it in os.scandir('../backend/') if it.is_dir()]
+sigma_versions = [
+    os.path.basename(it.path) for it in os.scandir("../backend/") if it.is_dir()
+]
+
+
+def version_key(version):
+    return tuple(map(int, version.split(".")))
+
 
 def get_port_from_version(version):
-    pattern = r'^\d+\.\d+\.\d+$'
+    pattern = r"^\d+\.\d+\.\d+$"
     if re.match(pattern, version):
-        return int(f'8{version.replace(".","")}')
+        return int(f'8{version.replace(".", "")}')
     else:
         return None
 
+
 @app.route("/")
 def home():
-    versions = sigma_versions
-    latest_version = sigma_versions[-1:][0]
-    port = get_port_from_version(latest_version)
-    targets = requests.get(f'http://localhost:{port}/api/v1/targets').json()
-    formats = requests.get(f'http://localhost:{port}/api/v1/formats').json()
-    pipelines = requests.get(f'http://localhost:{port}/api/v1/pipelines').json()
+    return render_template("index.html")
 
-    return render_template(
-        "index.html"
-    )
 
 @app.route("/api/v1/sigma-versions", methods=["GET"])
 def get_versions():
-    return jsonify(sigma_versions[::-1])
+    return jsonify(sorted(sigma_versions, key=version_key, reverse=True))
+
 
 @app.route("/api/v1/<version>/targets", methods=["GET"])
 def get_targets(version):
     port = get_port_from_version(version)
-    return requests.get(f'http://localhost:{port}/api/v1/targets', params=dict(request.args)).json()
+    return requests.get(
+        f"http://localhost:{port}/api/v1/targets", params=dict(request.args)
+    ).json()
+
 
 @app.route("/api/v1/<version>/formats", methods=["GET"])
 def get_formats(version):
     port = get_port_from_version(version)
-    return requests.get(f'http://localhost:{port}/api/v1/formats', params=dict(request.args)).json()
+    return requests.get(
+        f"http://localhost:{port}/api/v1/formats", params=dict(request.args)
+    ).json()
+
 
 @app.route("/api/v1/<version>/pipelines", methods=["GET"])
 def get_pipelines(version):
     port = get_port_from_version(version)
-    return requests.get(f'http://localhost:{port}/api/v1/pipelines', params=dict(request.args)).json()
+    return requests.get(
+        f"http://localhost:{port}/api/v1/pipelines", params=dict(request.args)
+    ).json()
+
 
 @app.route("/api/v1/<version>/convert", methods=["POST"])
 def convert(version):
     port = get_port_from_version(version)
     payload = request.json
-    return requests.post(f'http://localhost:{port}/api/v1/convert', json=payload).text
+    return requests.post(f"http://localhost:{port}/api/v1/convert", json=payload).text
+
 
 if __name__ == "__main__":
     app.run(host="0.0.0.0", port=int(os.environ.get("PORT", 8000)))