diff --git a/package.json b/package.json
index 590b4bc..c3b1cf0 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   "devDependencies": {
     "gzip-size-cli": "^3.0.0",
     "html-tags": "^3.0.0",
-    "jsdom": "^14.0.0",
+    "jsdom": "^15.0.0",
     "kocha": "^1.8.1",
     "power-assert": "^1.4.4",
     "rollup": "^1.10.1",
diff --git a/yarn.lock b/yarn.lock
index 1bcdcbe..379ad31 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1245,10 +1245,10 @@ jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
 
-jsdom@^14.0.0:
-  version "14.0.0"
-  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-14.0.0.tgz#c7f1441ebcc57902d08d5fb2f6ba2baf746da7c6"
-  integrity sha512-/VkyPmdtbwqpJSkwDx3YyJ3U1oawYNB/h5z8vTUZGAzjtu2OHTeFRfnJqyMHsJ5Cyes23trOmvUpM1GfHH1leA==
+jsdom@^15.0.0:
+  version "15.0.0"
+  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-15.0.0.tgz#60cf177d79c7fa1a498453c9e2534f57e65d151f"
+  integrity sha512-rJnHm7CHyIj4tDyz9VaCt0f0P0nEh/wEmMfwp9mMixy+L/r8OW/BNcgmIlfZuBBnVQS3eRBpvd/qM3R7vr7e3A==
   dependencies:
     abab "^2.0.0"
     acorn "^6.0.4"
@@ -1260,16 +1260,16 @@ jsdom@^14.0.0:
     domexception "^1.0.1"
     escodegen "^1.11.0"
     html-encoding-sniffer "^1.0.2"
-    nwsapi "^2.0.9"
+    nwsapi "^2.1.3"
     parse5 "5.1.0"
     pn "^1.1.0"
     request "^2.88.0"
     request-promise-native "^1.0.5"
-    saxes "^3.1.5"
+    saxes "^3.1.9"
     symbol-tree "^3.2.2"
     tough-cookie "^2.5.0"
     w3c-hr-time "^1.0.1"
-    w3c-xmlserializer "^1.0.1"
+    w3c-xmlserializer "^1.1.2"
     webidl-conversions "^4.0.2"
     whatwg-encoding "^1.0.5"
     whatwg-mimetype "^2.3.0"
@@ -1548,10 +1548,10 @@ normalize-path@^2.0.1:
   dependencies:
     remove-trailing-separator "^1.0.1"
 
-nwsapi@^2.0.9:
-  version "2.0.9"
-  resolved "https://registry.yarnpkg.com/nwsapi/-/nwsapi-2.0.9.tgz#77ac0cdfdcad52b6a1151a84e73254edc33ed016"
-  integrity sha512-nlWFSCTYQcHk/6A9FFnfhKc14c3aFhfdNBXgo8Qgi9QTBu/qg3Ww+Uiz9wMzXd1T8GFxPc2QIHB6Qtf2XFryFQ==
+nwsapi@^2.1.3:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/nwsapi/-/nwsapi-2.1.3.tgz#25f3a5cec26c654f7376df6659cdf84b99df9558"
+  integrity sha512-RowAaJGEgYXEZfQ7tvvdtAQUKPyTR6T6wNu0fwlNsGQYr/h3yQc6oI8WnVZh3Y/Sylwc+dtAlvPqfFZjhTyk3A==
 
 oauth-sign@~0.9.0:
   version "0.9.0"
@@ -2113,7 +2113,7 @@ safe-buffer@^5.1.2:
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
   integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
 
-saxes@^3.1.5:
+saxes@^3.1.9:
   version "3.1.9"
   resolved "https://registry.yarnpkg.com/saxes/-/saxes-3.1.9.tgz#c1c197cd54956d88c09f960254b999e192d7058b"
   integrity sha512-FZeKhJglhJHk7eWG5YM0z46VHmI3KJpMBAQm3xa9meDvd+wevB5GuBB0wc0exPInZiBBHqi00DbS8AcvCGCFMw==
@@ -2461,10 +2461,10 @@ w3c-hr-time@^1.0.1:
   dependencies:
     browser-process-hrtime "^0.1.2"
 
-w3c-xmlserializer@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/w3c-xmlserializer/-/w3c-xmlserializer-1.0.1.tgz#054cdcd359dc5d1f3ec9be4e272c756af4b21d39"
-  integrity sha512-XZGI1OH/OLQr/NaJhhPmzhngwcAnZDLytsvXnRmlYeRkmbb0I7sqFFA22erq4WQR0sUu17ZSQOAV9mFwCqKRNg==
+w3c-xmlserializer@^1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/w3c-xmlserializer/-/w3c-xmlserializer-1.1.2.tgz#30485ca7d70a6fd052420a3d12fd90e6339ce794"
+  integrity sha512-p10l/ayESzrBMYWRID6xbuCKh2Fp77+sA0doRuGn4tTIMrrZVeqfpKjXHY+oDh3K4nLdPgNwMTVP6Vp4pvqbNg==
   dependencies:
     domexception "^1.0.1"
     webidl-conversions "^4.0.2"