diff --git a/package-lock.json b/package-lock.json
index f1536b0..07be20f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,41 +4,46 @@
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@@ -273,7 +291,7 @@
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@@ -403,6 +416,11 @@
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-        "estraverse": "^4.2.0",
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+      "requires": {
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+        "debug": "4"
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@@ -762,6 +812,30 @@
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+      "version": "7.5.3",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.3.tgz",
+      "integrity": "sha512-kQ/dHIzuLrS6Je9+uv81ueZomEwH0qVYstcAQ4/Z93K8zeko9gtAbttJWzoC5ukqXY1PpoouV3+VSOqEAFt5wg=="
     },
     "xlsx": {
       "version": "0.11.19",
@@ -1742,6 +1825,11 @@
       "resolved": "http://registry.npmjs.org/xmlbuilder/-/xmlbuilder-9.0.7.tgz",
       "integrity": "sha1-Ey7mPS7FVlxVfiD0wi35rKaGsQ0="
     },
+    "xmlchars": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
+      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw=="
+    },
     "xmldom": {
       "version": "0.1.19",
       "resolved": "https://registry.npmjs.org/xmldom/-/xmldom-0.1.19.tgz",
diff --git a/package.json b/package.json
index 328f01f..3bbb100 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "html-entities": "^1.2.1",
     "iri": "^1.3.0",
     "jquery": "^3.4.1",
-    "jsdom": "^11.6.2",
+    "jsdom": "^16.7.0",
     "json": "^9.0.6",
     "jsonld": "^0.4.12",
     "node-json2html": "^1.1.1",