diff --git a/package-lock.json b/package-lock.json
index 4303f23..f989020 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,7 @@
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         "@babel/plugin-syntax-typescript": "^8.0.3",
         "@eslint/js": "^10.0.1",
-        "@types/jsdom": "^27.0.0",
+        "@types/jsdom": "^28.0.3",
         "@types/mocha": "^10.0.10",
         "@types/node": "26.x",
         "@types/vscode": "^1.125.0",
@@ -1485,17 +1485,51 @@
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-      "resolved": "https://registry.npmjs.org/@types/jsdom/-/jsdom-27.0.0.tgz",
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+      "version": "28.0.3",
+      "resolved": "https://registry.npmjs.org/@types/jsdom/-/jsdom-28.0.3.tgz",
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       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@types/node": "*",
         "@types/tough-cookie": "*",
-        "parse5": "^7.0.0"
+        "parse5": "^8.0.0",
+        "undici-types": "^7.21.0"
       }
     },
+    "node_modules/@types/jsdom/node_modules/entities": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-8.0.0.tgz",
+      "integrity": "sha512-zwfzJecQ/Uej6tusMqwAqU/6KL2XaB2VZ2Jg54Je6ahNBGNH6Ek6g3jjNCF0fG9EWQKGZNddNjU5F1ZQn/sBnA==",
+      "dev": true,
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=20.19.0"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/entities?sponsor=1"
+      }
+    },
+    "node_modules/@types/jsdom/node_modules/parse5": {
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-8.0.1.tgz",
+      "integrity": "sha512-z1e/HMG90obSGeidlli3hj7cbocou0/wa5HacvI3ASx34PecNjNQeaHNo5WIZpWofN9kgkqV1q5YvXe3F0FoPw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "entities": "^8.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/inikulin/parse5?sponsor=1"
+      }
+    },
+    "node_modules/@types/jsdom/node_modules/undici-types": {
+      "version": "7.29.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.29.0.tgz",
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+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/jsesc": {
       "version": "2.5.1",
       "resolved": "https://registry.npmjs.org/@types/jsesc/-/jsesc-2.5.1.tgz",
diff --git a/package.json b/package.json
index 4947015..bfbec6f 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
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     "@babel/plugin-syntax-typescript": "^8.0.3",
     "@eslint/js": "^10.0.1",
-    "@types/jsdom": "^27.0.0",
+    "@types/jsdom": "^28.0.3",
     "@types/mocha": "^10.0.10",
     "@types/node": "26.x",
     "@types/vscode": "^1.125.0",