diff --git a/package-lock.json b/package-lock.json
index 2b35e7af..30eb7332 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
     "": {
       "name": "scalatags",
       "devDependencies": {
-        "jsdom": "^20.0.3"
+        "jsdom": "^21.1.0"
       }
     },
     "node_modules/@tootallnate/once": {
@@ -316,9 +316,9 @@
       "dev": true
     },
     "node_modules/jsdom": {
-      "version": "20.0.3",
-      "resolved": "https://registry.npmjs.org/jsdom/-/jsdom-20.0.3.tgz",
-      "integrity": "sha512-SYhBvTh89tTfCD/CRdSOm13mOBa42iTaTyfyEWBdKcGdPxPtLFBXuHR8XHb33YNYaP+lLbmSvBTsnoesCNJEsQ==",
+      "version": "21.1.0",
+      "resolved": "https://registry.npmjs.org/jsdom/-/jsdom-21.1.0.tgz",
+      "integrity": "sha512-m0lzlP7qOtthD918nenK3hdItSd2I+V3W9IrBcB36sqDwG+KnUs66IF5GY7laGWUnlM9vTsD0W1QwSEBYWWcJg==",
       "dev": true,
       "dependencies": {
         "abab": "^2.0.6",
@@ -893,9 +893,9 @@
       "dev": true
     },
     "jsdom": {
-      "version": "20.0.3",
-      "resolved": "https://registry.npmjs.org/jsdom/-/jsdom-20.0.3.tgz",
-      "integrity": "sha512-SYhBvTh89tTfCD/CRdSOm13mOBa42iTaTyfyEWBdKcGdPxPtLFBXuHR8XHb33YNYaP+lLbmSvBTsnoesCNJEsQ==",
+      "version": "21.1.0",
+      "resolved": "https://registry.npmjs.org/jsdom/-/jsdom-21.1.0.tgz",
+      "integrity": "sha512-m0lzlP7qOtthD918nenK3hdItSd2I+V3W9IrBcB36sqDwG+KnUs66IF5GY7laGWUnlM9vTsD0W1QwSEBYWWcJg==",
       "dev": true,
       "requires": {
         "abab": "^2.0.6",
diff --git a/package.json b/package.json
index 82be01ff..e8096261 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "scalatags",
   "devDependencies": {
-    "jsdom": "^20.0.3"
+    "jsdom": "^21.1.0"
   }
 }