diff --git a/package.json b/package.json
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "test": "test"
   },
   "dependencies": {
-    "@webcomponents/shadycss": "^1.1.3",
+    "@webcomponents/shadycss": "^1.3.1",
     "@webcomponents/webcomponentsjs": "^1.2.0",
     "bower": "^1.8.4",
     "browserify": "^16.2.3",
@@ -17,9 +17,13 @@
     "coffeelint": "^2.1.0",
     "coffeescript": "^2.3.0",
     "d3": "^5.1.0",
+    "esmify": "^2.1.1",
+    "lit-element": "^2.1.0",
+    "lit-html": "^1.1.0",
     "mocha": "^2.5.3",
     "n3": "^1.0.0-alpha",
     "pixi.js": "^4.7.3",
+    "significant-rounding": "^2.0.0",
     "tinycolor2": "^1.4.1"
   },
   "devDependencies": {