diff --git a/package.json b/package.json
index 7718471..e40d94f 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   "devDependencies": {
     "@vuepress/plugin-back-to-top": "1.8.2",
     "@vuepress/plugin-medium-zoom": "1.8.2",
-    "jsdom": "16.5.1",
+    "jsdom": "16.5.2",
     "markdown-it-attrs": "4.0.0",
     "pre-commit": "1.2.2",
     "prettier": "2.2.1",
diff --git a/yarn.lock b/yarn.lock
index 557987f..a12635f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1387,10 +1387,10 @@ acorn@^7.1.1:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.4.1.tgz#feaed255973d2e77555b83dbc08851a6c63520fa"
   integrity sha512-nQyp0o1/mNdbTO1PO6kHkwSrmgZ0MT/jCCpNiwbUjGoRN4dlBhqJtoQuCnEOKzgTVwg0ZWiCoQy6SxMebQVh8A==
 
-acorn@^8.0.5:
-  version "8.0.5"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.0.5.tgz#a3bfb872a74a6a7f661bc81b9849d9cac12601b7"
-  integrity sha512-v+DieK/HJkJOpFBETDJioequtc3PfxsWMaxIdIwujtF7FEV/MAyDQLlm6/zPvr7Mix07mLh6ccVwIsloceodlg==
+acorn@^8.1.0:
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.1.0.tgz#52311fd7037ae119cbb134309e901aa46295b3fe"
+  integrity sha512-LWCF/Wn0nfHOmJ9rzQApGnxnvgfROzGilS8936rqN/lfcYkY9MYZzdMqN+2NJ4SlTc+m5HiSa+kNfDtI64dwUA==
 
 agentkeepalive@^2.2.0:
   version "2.2.0"
@@ -4660,13 +4660,13 @@ jsbn@~0.1.0:
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
   integrity sha1-peZUwuWi3rXyAdls77yoDA7y9RM=
 
-jsdom@16.5.1:
-  version "16.5.1"
-  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-16.5.1.tgz#4ced6bbd7b77d67fb980e64d9e3e6fb900f97dd6"
-  integrity sha512-pF73EOsJgwZekbDHEY5VO/yKXUkab/DuvrQB/ANVizbr6UAHJsDdHXuotZYwkJSGQl1JM+ivXaqY+XBDDL4TiA==
+jsdom@16.5.2:
+  version "16.5.2"
+  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-16.5.2.tgz#583fac89a0aea31dbf6237e7e4bedccd9beab472"
+  integrity sha512-JxNtPt9C1ut85boCbJmffaQ06NBnzkQY/MWO3YxPW8IWS38A26z+B1oBvA9LwKrytewdfymnhi4UNH3/RAgZrg==
   dependencies:
     abab "^2.0.5"
-    acorn "^8.0.5"
+    acorn "^8.1.0"
     acorn-globals "^6.0.0"
     cssom "^0.4.4"
     cssstyle "^2.3.0"
@@ -4688,7 +4688,7 @@ jsdom@16.5.1:
     webidl-conversions "^6.1.0"
     whatwg-encoding "^1.0.5"
     whatwg-mimetype "^2.3.0"
-    whatwg-url "^8.0.0"
+    whatwg-url "^8.5.0"
     ws "^7.4.4"
     xml-name-validator "^3.0.0"
 
@@ -4903,11 +4903,6 @@ lodash.memoize@^4.1.2:
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
   integrity sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=
 
-lodash.sortby@^4.7.0:
-  version "4.7.0"
-  resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
-  integrity sha1-7dFMgk4sycHgsKG0K7UhBRakJDg=
-
 lodash.template@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.template/-/lodash.template-4.5.0.tgz#f976195cf3f347d0d5f52483569fe8031ccce8ab"
@@ -4928,7 +4923,7 @@ lodash.uniq@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
-lodash@^4.17.11, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.20, lodash@^4.17.3, lodash@^4.17.5:
+lodash@^4.17.11, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.20, lodash@^4.17.3, lodash@^4.17.5, lodash@^4.7.0:
   version "4.17.21"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
   integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
@@ -8137,12 +8132,12 @@ whatwg-mimetype@^2.3.0:
   resolved "https://registry.yarnpkg.com/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz#3d4b1e0312d2079879f826aff18dbeeca5960fbf"
   integrity sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==
 
-whatwg-url@^8.0.0:
-  version "8.4.0"
-  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-8.4.0.tgz#50fb9615b05469591d2b2bd6dfaed2942ed72837"
-  integrity sha512-vwTUFf6V4zhcPkWp/4CQPr1TW9Ml6SF4lVyaIMBdJw5i6qUUJ1QWM4Z6YYVkfka0OUIzVo/0aNtGVGk256IKWw==
+whatwg-url@^8.0.0, whatwg-url@^8.5.0:
+  version "8.5.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-8.5.0.tgz#7752b8464fc0903fec89aa9846fc9efe07351fd3"
+  integrity sha512-fy+R77xWv0AiqfLl4nuGUlQ3/6b5uNfQ4WAbGQVMYshCTCCPK9psC1nWh3XHuxGVCtlcDDQPQW1csmmIQo+fwg==
   dependencies:
-    lodash.sortby "^4.7.0"
+    lodash "^4.7.0"
     tr46 "^2.0.2"
     webidl-conversions "^6.1.0"