diff --git a/package-lock.json b/package-lock.json
index 00cd477..4c74eed 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -70,7 +70,7 @@
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@@ -1921,7 +1929,7 @@
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@@ -2690,9 +2700,9 @@
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@@ -2945,6 +2955,11 @@
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@@ -3134,6 +3149,31 @@
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+      "integrity": "sha1-Pu4AssWqgyOc+wTFcA2jb4HNCLY=",
+      "requires": {
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+      "resolved": "https://registry.npmjs.org/request-promise-native/-/request-promise-native-1.0.5.tgz",
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@@ -3332,15 +3372,16 @@
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@@ -3419,6 +3460,11 @@
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@@ -3606,9 +3652,9 @@
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-      "integrity": "sha1-C2GKVWW23qkL80JdBNVe3EdadWE=",
+      "version": "2.3.4",
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@@ -3717,9 +3763,9 @@
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-      "integrity": "sha1-PdPT55Crwk17DToDT/q6vijrvAQ="
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+      "integrity": "sha512-jZnMwlb9Iku/O3smGWvZhauCf6cvvpKi4BKRiliS3cxnI+Gz9j5MEpTz2UFuXiKPJocb7gnsLHwiS05ige5BEA=="
     },
     "validate-npm-package-license": {
       "version": "3.0.1",
@@ -3744,12 +3790,12 @@
     "webidl-conversions": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-4.0.2.tgz",
-      "integrity": "sha1-qFWYCx8LazWbodXZ+zmulB+qY60="
+      "integrity": "sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg=="
     },
     "whatwg-encoding": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-1.0.3.tgz",
-      "integrity": "sha1-V8I1vIZX6RTSTho5fTyC2u4Ka6M=",
+      "integrity": "sha512-jLBwwKUhi8WtBfsMQlL4bUUcT8sMkAtQinscJAe/M4KHCkHuUJAF6vuB0tueNIw4c8ziO6AkRmgY+jL3a0iiPw==",
       "requires": {
         "iconv-lite": "0.4.19"
       }
diff --git a/package.json b/package.json
index 90e3fc5..376b912 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "source-map-support": "0.5.x"
   },
   "dependencies": {
-    "jsdom": "^9.12.0",
+    "jsdom": "^10.0.0",
     "yargs": "^11.0.0"
   }
 }
diff --git a/src/helpers.js b/src/helpers.js
index cf2a6dc..6159c23 100644
--- a/src/helpers.js
+++ b/src/helpers.js
@@ -7,7 +7,8 @@ if (!showdown.hasOwnProperty('helper')) {
 }
 
 if (typeof this.document === 'undefined' && typeof this.window === 'undefined') {
-  this.window = require('jsdom').jsdom('', {}).defaultView; // jshint ignore:line
+  var jsdom = require('jsdom');
+  this.window = new jsdom.JSDOM('', {}).window; // jshint ignore:line
 }
 showdown.helper.document = this.window.document;