diff --git a/package-lock.json b/package-lock.json
index fd4047e4..5db06105 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -285,9 +285,9 @@
       }
     },
     "@webcomponents/custom-elements": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/@webcomponents/custom-elements/-/custom-elements-1.2.2.tgz",
-      "integrity": "sha512-9lckVAFpDEma94Ass/DHXY5ZoLZI5p+ambJQnra40npWIq+SQynvUHsJjLVmYartb4lZH9u+HLgfiAEnQih10Q==",
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/@webcomponents/custom-elements/-/custom-elements-1.2.3.tgz",
+      "integrity": "sha512-qRLglUZpJFzXrPkVxWbxz8mv2Yy85jOHaPIHcZKHg3bNty3DOBVd0tbXpmm1372uHeycB+IMEWqMRo01HwMXIw==",
       "dev": true
     },
     "@webpack-cli/serve": {
diff --git a/package.json b/package.json
index 081ccb11..6fc79d0c 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "@types/node": "10.14.4",
     "@types/pretty-bytes": "5.1.0",
     "@types/webassembly-js-api": "0.0.3",
-    "@webcomponents/custom-elements": "1.2.2",
+    "@webcomponents/custom-elements": "1.2.3",
     "@webpack-cli/serve": "0.1.5",
     "assets-webpack-plugin": "3.9.10",
     "chokidar": "2.1.5",