diff --git a/package.json b/package.json
index 2a54489..a6a08c4 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "debug": "^4.1.1",
     "express": "^4.17.1",
     "html-pdf-chrome": "^0.6.1",
-    "jsdom": "^16.2.2"
+    "jsdom": "^16.4.0"
   },
   "devDependencies": {
     "coveralls": "^3.1.0",
diff --git a/yarn.lock b/yarn.lock
index 7955142..b8a22d2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1750,10 +1750,10 @@ jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
 
-jsdom@^16.2.2:
-  version "16.2.2"
-  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-16.2.2.tgz#76f2f7541646beb46a938f5dc476b88705bedf2b"
-  integrity sha512-pDFQbcYtKBHxRaP55zGXCJWgFHkDAYbKcsXEK/3Icu9nKYZkutUXfLBwbD+09XDutkYSHcgfQLZ0qvpAAm9mvg==
+jsdom@^16.4.0:
+  version "16.4.0"
+  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-16.4.0.tgz#36005bde2d136f73eee1a830c6d45e55408edddb"
+  integrity sha512-lYMm3wYdgPhrl7pDcRmvzPhhrGVBeVhPIqeHjzeiHN3DFmD1RBpbExbi8vU7BJdH8VAZYovR8DMt0PNNDM7k8w==
   dependencies:
     abab "^2.0.3"
     acorn "^7.1.1"
@@ -1775,7 +1775,7 @@ jsdom@^16.2.2:
     tough-cookie "^3.0.1"
     w3c-hr-time "^1.0.2"
     w3c-xmlserializer "^2.0.0"
-    webidl-conversions "^6.0.0"
+    webidl-conversions "^6.1.0"
     whatwg-encoding "^1.0.5"
     whatwg-mimetype "^2.3.0"
     whatwg-url "^8.0.0"
@@ -2982,10 +2982,10 @@ webidl-conversions@^5.0.0:
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-5.0.0.tgz#ae59c8a00b121543a2acc65c0434f57b0fc11aff"
   integrity sha512-VlZwKPCkYKxQgeSbH5EyngOmRp7Ww7I9rQLERETtf5ofd9pGeswWiOtogpEO850jziPRarreGxn5QIiTqpb2wA==
 
-webidl-conversions@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-6.0.0.tgz#ff41d921371f43e772dba311b146ab6c0ef0ead4"
-  integrity sha512-jTZAeJnc6D+yAOjygbJOs33kVQIk5H6fj9SFDOhIKjsf9HiAzL/c+tAJsc8ASWafvhNkH+wJZms47pmajkhatA==
+webidl-conversions@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-6.1.0.tgz#9111b4d7ea80acd40f5270d666621afa78b69514"
+  integrity sha512-qBIvFLGiBpLjfwmYAaHPXsn+ho5xZnGvyGvsarywGNc8VyQJUMHJ8OBKGGrPER0okBeMDaan4mNBlgBROxuI8w==
 
 whatwg-encoding@^1.0.5:
   version "1.0.5"
@@ -3060,16 +3060,11 @@ write@^0.2.1:
   dependencies:
     mkdirp "^0.5.1"
 
-ws@^7.2.0:
+ws@^7.2.0, ws@^7.2.3:
   version "7.3.1"
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.3.1.tgz#d0547bf67f7ce4f12a72dfe31262c68d7dc551c8"
   integrity sha512-D3RuNkynyHmEJIpD2qrgVkc9DQ23OrN/moAwZX4L8DfvszsJxpjQuUq3LMx6HoYji9fbIOBY18XWBsAux1ZZUA==
 
-ws@^7.2.3:
-  version "7.2.3"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-7.2.3.tgz#a5411e1fb04d5ed0efee76d26d5c46d830c39b46"
-  integrity sha512-HTDl9G9hbkNDk98naoR/cHDws7+EyYMOdL1BmjsZXRUjf7d+MficC4B7HLUPlSiho0vg+CWKrGIt/VJBd1xunQ==
-
 xml-name-validator@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-3.0.0.tgz#6ae73e06de4d8c6e47f9fb181f78d648ad457c6a"