diff --git a/core/package.json b/core/package.json
index 1a391f6937..9d9c8fe520 100644
--- a/core/package.json
+++ b/core/package.json
@@ -34,8 +34,8 @@
     "tslib": "^1.10.0"
   },
   "devDependencies": {
-    "@stencil/core": "1.11.2",
-    "@stencil/sass": "1.1.1",
+    "@stencil/core": "1.12.0",
+    "@stencil/sass": "1.3.1",
     "@types/jest": "24.9.0",
     "@types/node": "12.12.3",
     "@types/puppeteer": "1.19.1",