diff --git a/package-lock.json b/package-lock.json
index cc7a537..58e9668 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,7 @@
         "@babel/eslint-parser": "^8.0.1",
         "@babel/plugin-syntax-typescript": "^8.0.3",
         "@eslint/js": "^10.0.1",
-        "@types/jsdom": "^28.0.3",
+        "@types/jsdom": "^30.0.0",
         "@types/mocha": "^10.0.10",
         "@types/node": "26.x",
         "@types/vscode": "^1.125.0",
@@ -1485,16 +1485,16 @@
       "license": "MIT"
     },
     "node_modules/@types/jsdom": {
-      "version": "28.0.3",
-      "resolved": "https://registry.npmjs.org/@types/jsdom/-/jsdom-28.0.3.tgz",
-      "integrity": "sha512-/HQ2uFoetFTXuye8vzIcHw2z6Fwi7Hi/qcgC+RoS9NCyewiqxhVGqlG+ViGB6lkax481R6dmhf1I7lIGlzJStQ==",
+      "version": "30.0.0",
+      "resolved": "https://registry.npmjs.org/@types/jsdom/-/jsdom-30.0.0.tgz",
+      "integrity": "sha512-uAHGxujGE0cDaKGdK28zgDotFtNA7MKq5DXl8LrfdxdCI8VHcg15oJz+amHTChPNI5JpgEPQWc2xFdrw3em/nQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@types/node": "*",
         "@types/tough-cookie": "*",
         "parse5": "^8.0.0",
-        "undici-types": "^7.21.0"
+        "undici-types": "^8.9.0"
       }
     },
     "node_modules/@types/jsdom/node_modules/entities": {
@@ -1524,9 +1524,9 @@
       }
     },
     "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",
-      "integrity": "sha512-vamA8dGlzMwhpyYpQp9d8vka3o4D/yn5I7ez7Or+msDA4bZ8Uh+Zy91WvWf3I73gDAkFha9JcYRqm2li0Npfgg==",
+      "version": "8.10.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.10.0.tgz",
+      "integrity": "sha512-ibvdovq3nCFs8Msrd95BW+zUOq+aOVbT+wpHUoPWhztbHEoPc6oof51iFDB6Es8lTKvNvVW9jNSAB8dwrKTMGg==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/package.json b/package.json
index 8c7961f..a3ba52c 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
     "@babel/eslint-parser": "^8.0.1",
     "@babel/plugin-syntax-typescript": "^8.0.3",
     "@eslint/js": "^10.0.1",
-    "@types/jsdom": "^28.0.3",
+    "@types/jsdom": "^30.0.0",
     "@types/mocha": "^10.0.10",
     "@types/node": "26.x",
     "@types/vscode": "^1.125.0",