diff --git a/package.json b/package.json
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
     "test": "test"
   },
   "dependencies": {
+    "@material/mwc-slider": "^0.26.1",
     "@types/async": "^3.2.13",
     "@types/d3": "^7.1.0",
     "@types/debug": "^4.1.7",
@@ -26,6 +27,7 @@
     "parse-prometheus-text-format": "^1.1.1",
     "reconnectingwebsocket": "^1.0.0",
     "sylvester": "^0.0.21",
+    "typescript": "^4.7.2",
     "underscore": "^1.13.3",
     "vite": "^2.9.1",
     "vite-plugin-rewrite-all": "^0.1.2"