diff --git a/package-lock.json b/package-lock.json
index 8b8a15c2..a023b283 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,9 +30,9 @@
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     "xml-name-validator": {
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@@ -2985,9 +3110,9 @@
       "integrity": "sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw=="
     },
     "xmlchars": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-1.3.1.tgz",
-      "integrity": "sha512-tGkGJkN8XqCod7OT+EvGYK5Z4SfDQGD30zAa58OcnAa0RRWgzUEK72tkXhsX1FZd+rgnhRxFtmO+ihkp8LHSkw=="
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
+      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw=="
     },
     "xmlhttprequest-ssl": {
       "version": "1.6.3",
diff --git a/package.json b/package.json
index d595be5c..218ed980 100644
--- a/package.json
+++ b/package.json
@@ -104,7 +104,7 @@
     "express": "4.16.x",
     "express-session": "1.15.x",
     "extend": "3.0.x",
-    "jsdom": "12.2.x",
+    "jsdom": "16.5.x",
     "less": "3.8.x",
     "less-middleware": "3.0.x",
     "less-plugin-autoprefix": "2.0.x",