diff --git a/src/main/polymer/xqDoc/package-lock.json b/src/main/polymer/xqDoc/package-lock.json
index 69b2496..6eec37b 100644
--- a/src/main/polymer/xqDoc/package-lock.json
+++ b/src/main/polymer/xqDoc/package-lock.json
@@ -351,9 +351,9 @@
       }
     },
     "@polymer/polymer": {
-      "version": "3.3.1",
-      "resolved": "https://registry.npmjs.org/@polymer/polymer/-/polymer-3.3.1.tgz",
-      "integrity": "sha512-8KaB48tzyMjdsHdxo5KvCAaqmTe7rYDzQAoj/pyEfq9Fp4YfUaS+/xqwYj0GbiDAUNzwkmEQ7dw9cgnRNdKO8A==",
+      "version": "3.5.1",
+      "resolved": "https://registry.npmjs.org/@polymer/polymer/-/polymer-3.5.1.tgz",
+      "integrity": "sha512-JlAHuy+1qIC6hL1ojEUfIVD58fzTpJAoCxFwV5yr0mYTXV1H8bz5zy0+rC963Cgr9iNXQ4T9ncSjC2fkF9BQfw==",
       "requires": {
         "@webcomponents/shadycss": "^1.9.1"
       }
@@ -473,9 +473,9 @@
       }
     },
     "@webcomponents/shadycss": {
-      "version": "1.9.3",
-      "resolved": "https://registry.npmjs.org/@webcomponents/shadycss/-/shadycss-1.9.3.tgz",
-      "integrity": "sha512-fRuET+UGrH84hG0UF4iHbFqWZKUoan4/ki+iCOJ/vnKltPSHv/ZVbcA6sT/pRreznt8aKEGqN2KdHvgRxn4xjA=="
+      "version": "1.11.0",
+      "resolved": "https://registry.npmjs.org/@webcomponents/shadycss/-/shadycss-1.11.0.tgz",
+      "integrity": "sha512-L5O/+UPum8erOleNjKq6k58GVl3fNsEQdSOyh0EUhNmi7tHUyRuCJy1uqJiWydWcLARE5IPsMoPYMZmUGrz1JA=="
     },
     "@webcomponents/webcomponentsjs": {
       "version": "2.4.0",
diff --git a/src/main/polymer/xqDoc/package.json b/src/main/polymer/xqDoc/package.json
index 9014f88..2e9891f 100644
--- a/src/main/polymer/xqDoc/package.json
+++ b/src/main/polymer/xqDoc/package.json
@@ -16,7 +16,7 @@
     "@polymer/paper-toast": "^3.0.1",
     "@polymer/paper-toggle-button": "^3.0.1",
     "@polymer/paper-toolbar": "^3.0.1",
-    "@polymer/polymer": "^3.0.0",
+    "@polymer/polymer": "^3.5.1",
     "@vaadin/vaadin-grid": "^5.2.5",
     "polymer-code-highlighter": "^1.0.5"
   },