diff --git a/package-lock.json b/package-lock.json
index d827ae6c2e..09d6674f1f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2931,9 +2931,9 @@
       "dev": true
     },
     "@webcomponents/webcomponentsjs": {
-      "version": "1.2.3",
-      "resolved": "https://registry.npmjs.org/@webcomponents/webcomponentsjs/-/webcomponentsjs-1.2.3.tgz",
-      "integrity": "sha512-4ZdOi2UwNr2wZk+GX+Q98ew0R3aBTD61zXRVw3Oapow3JPDRY2OM6HH/kREYMAc1x2zRbp0AAd/OjfuqJ0oojg==",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/@webcomponents/webcomponentsjs/-/webcomponentsjs-1.3.0.tgz",
+      "integrity": "sha512-x7x4rfXfX+xlg0Cdy752IVC8SjjOuMfjSNi1Vy7GKfWCm/MKSc42wGubngPl6/nO7w+nHM/MvfhTD/aEngA7/w==",
       "dev": true
     },
     "abbrev": {
diff --git a/package.json b/package.json
index 9474674ba0..ee29c9cc37 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "@polymer/gen-closure-declarations": "^0.4.0",
     "@polymer/gen-typescript-declarations": "^1.3.0",
     "@webcomponents/shadycss": "^1.1.0",
-    "@webcomponents/webcomponentsjs": "^1.1.0",
+    "@webcomponents/webcomponentsjs": "^1.3.0",
     "babel-preset-minify": "^0.2.0",
     "del": "^3.0.0",
     "dom5": "^3.0.0",