diff --git a/package-lock.json b/package-lock.json
index 03b3bb7..f0e27a9 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -2359,21 +2401,28 @@
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-        "lodash": "^4.13.1"
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-      "integrity": "sha1-UoF3D2jgyXGeUWP9P6tIIhX0/aU=",
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-        "stealthy-require": "^1.1.0",
-        "tough-cookie": ">=2.3.3"
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@@ -2427,11 +2476,11 @@
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@@ -2681,7 +2730,7 @@
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@@ -2723,9 +2772,9 @@
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-      "integrity": "sha1-rifbOPZgp64uHDt9G8KQgZuFGeY="
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.4.tgz",
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@@ -2802,11 +2851,11 @@
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-      "integrity": "sha1-qLE/1r/SSJUZZ0zN5VujaTtwbQk=",
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@@ -2942,9 +2991,9 @@
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+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
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@@ -3008,20 +3057,18 @@
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-      "integrity": "sha1-gqwr/2PZUOqeMYmlimViX+3xkEU=",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/w3c-hr-time/-/w3c-hr-time-1.0.2.tgz",
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       "requires": {
-        "browser-process-hrtime": "^0.1.2"
+        "browser-process-hrtime": "^1.0.0"
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-      "resolved": "https://registry.npmjs.org/w3c-xmlserializer/-/w3c-xmlserializer-1.0.0.tgz",
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+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/w3c-xmlserializer/-/w3c-xmlserializer-2.0.0.tgz",
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@@ -3031,9 +3078,9 @@
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-      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-4.0.2.tgz",
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+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-6.1.0.tgz",
+      "integrity": "sha512-qBIvFLGiBpLjfwmYAaHPXsn+ho5xZnGvyGvsarywGNc8VyQJUMHJ8OBKGGrPER0okBeMDaan4mNBlgBROxuI8w=="
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@@ -3044,18 +3091,18 @@
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-      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-2.2.0.tgz",
-      "integrity": "sha512-5YSO1nMd5D1hY3WzAQV3PzZL83W3YeyR1yW9PcH26Weh1t+Vzh9B6XkDh7aXm83HBZ4nSMvkjvN2H2ySWIvBgw=="
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz",
+      "integrity": "sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g=="
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+      "version": "8.7.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-8.7.0.tgz",
+      "integrity": "sha512-gAojqb/m9Q8a5IV96E3fHJM70AzCkgt4uXYX2O7EmuyOnLrViCQlsEBmF9UQIu3/aeAIp2U17rtbpZWNntQqdg==",
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-        "lodash.sortby": "^4.7.0",
-        "tr46": "^1.0.1",
-        "webidl-conversions": "^4.0.2"
+        "lodash": "^4.7.0",
+        "tr46": "^2.1.0",
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@@ -3088,9 +3135,9 @@
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+      "version": "2.2.0",
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 }
diff --git a/package.json b/package.json
index b8a699d..a2a314c 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
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     "fs-extra": "^7.0.1",
     "jquery": "^3.3.1",
-    "jsdom": "^13.0.0",
+    "jsdom": "^16.5.0",
     "node-fetch": "^2.3.0",
     "opn": "^5.4.0",
     "text-encoding": "git+https://github.com/inexorabletash/text-encoding.git",