Next Amber release will be 0.19.0.

bower.json

@@ -26,7 +26,7 @@
   ],
   "private": false,
   "dependencies": {
-    "amber": ">0.18.5",
+    "amber": ">=0.19.0",
     "domite": "^0.4.0 || ^0.5.0 || ^0.6.0"
   },
   "devDependencies": {