diff --git a/package-lock.json b/package-lock.json
index 8f8eae1..24ab782 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,7 +20,7 @@
         "@types/glob": "^9.0.0",
         "@types/iarna__toml": "^2.0.5",
         "@types/mocha": "^10.0.10",
-        "@types/node": "25.x",
+        "@types/node": "26.x",
         "@types/sinon": "^21.0.0",
         "@types/vscode": "^1.82.0",
         "@types/which": "^3.0.4",
@@ -1520,13 +1520,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "25.9.3",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.9.3.tgz",
-      "integrity": "sha512-603BddQMv3pUcr4U2dhujk83N2tTDVr/34wII2B6bJy6g+8WD6yUb11jszNs0gdi4PesVWl7ABt8nYMVpnLUcg==",
+      "version": "26.1.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.1.0.tgz",
+      "integrity": "sha512-O0A1G3xPGy4w7AgQdAQYUlQ+BKk2Oovw8eRpofyp5KdBZULnbe+WqaOVNrm705SHphCiG4XHsACrSmPu1f+Kgw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": ">=7.24.0 <7.24.7"
+        "undici-types": "~8.3.0"
       }
     },
     "node_modules/@types/normalize-package-data": {
@@ -9017,9 +9017,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.24.6",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.24.6.tgz",
-      "integrity": "sha512-WRNW+sJgj5OBN4/0JpHFqtqzhpbnV0GuB+OozA9gCL7a993SmU+1JBZCzLNxYsbMfIeDL+lTsphD5jN5N+n0zg==",
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
+      "integrity": "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/package.json b/package.json
index 61a3681..f7c04dd 100644
--- a/package.json
+++ b/package.json
@@ -267,7 +267,7 @@
     "@types/glob": "^9.0.0",
     "@types/iarna__toml": "^2.0.5",
     "@types/mocha": "^10.0.10",
-    "@types/node": "25.x",
+    "@types/node": "26.x",
     "@types/sinon": "^21.0.0",
     "@types/vscode": "^1.82.0",
     "@types/which": "^3.0.4",