diff --git a/package-lock.json b/package-lock.json
index d8d55495..1a595d16 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,14 +15,15 @@
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+      "integrity": "sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g=="
     },
     "whatwg-url": {
-      "version": "6.4.1",
-      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-6.4.1.tgz",
-      "integrity": "sha512-FwygsxsXx27x6XXuExA/ox3Ktwcbf+OAvrKmLulotDAiO1Q6ixchPFaHYsis2zZBZSJTR0+dR+JVtf7MlbqZjw==",
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-8.0.0.tgz",
+      "integrity": "sha512-41ou2Dugpij8/LPO5Pq64K5q++MnRCBpEHvQr26/mArEKTkCV5aoXIqyhuYtE0pkqScXwhf2JP57rkRTYM29lQ==",
       "requires": {
         "lodash.sortby": "^4.7.0",
-        "tr46": "^1.0.1",
-        "webidl-conversions": "^4.0.2"
+        "tr46": "^2.0.0",
+        "webidl-conversions": "^5.0.0"
       }
     },
     "wordwrap": {
@@ -3995,19 +4377,20 @@
       }
     },
     "ws": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-4.1.0.tgz",
-      "integrity": "sha512-ZGh/8kF9rrRNffkLFV4AzhvooEclrOH0xaugmqGsIfFgOE/pIz4fMc4Ef+5HSQqTEug2S9JZIWDR47duDSLfaA==",
-      "requires": {
-        "async-limiter": "~1.0.0",
-        "safe-buffer": "~5.1.0"
-      }
+      "version": "7.2.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.2.1.tgz",
+      "integrity": "sha512-sucePNSafamSKoOqoNfBd8V0StlkzJKL2ZAhGQinCfNQ+oacw+Pk7lcdAElecBF2VkLNZRiIb5Oi1Q5lVUVt2A=="
     },
     "xml-name-validator": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-3.0.0.tgz",
       "integrity": "sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw=="
     },
+    "xmlchars": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
+      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw=="
+    },
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
diff --git a/package.json b/package.json
index c2fc8507..01d8ea2b 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "jsdom": false
   },
   "dependencies": {
-    "jsdom": "^11.9.0"
+    "jsdom": "^16.2.0"
   },
   "devDependencies": {
     "browserify": "^16.2.3",
@@ -19,7 +19,7 @@
     "rollup-plugin-node-resolve": "^3.0.0",
     "rollup-plugin-replace": "^2.0.0",
     "standard": "^10.0.3",
-    "turndown-attendant": "0.0.2"
+    "turndown-attendant": "0.0.3"
   },
   "files": [
     "lib",