diff --git a/package-lock.json b/package-lock.json
index f48f19a..d36a788 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "1.2.0",
       "license": "MIT",
       "devDependencies": {
-        "@types/node": "^24.13.3",
+        "@types/node": "^26.1.1",
         "ajv": "8.20.0",
         "ajv-formats": "3.0.1",
         "yaml": "2.9.0"
@@ -19,13 +19,13 @@
       }
     },
     "node_modules/@types/node": {
-      "version": "24.13.3",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.13.3.tgz",
-      "integrity": "sha512-Dh8vAsV36ig5wa9OX4pXvMc9D3Veibfw2wix0CUwYODLD8nkj9UsLjASr49nPg+2eKzxhBV+v7L8pXvT4e639Q==",
+      "version": "26.1.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.1.1.tgz",
+      "integrity": "sha512-nxAkRSVkN1Y0JC1W8ky/fTfkGsMmcrRsbx+3XoZE+rMOX71kLYTV7fLXpqud1GpbpP5TuffXFqfX7fH2GgZREw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.18.0"
+        "undici-types": "~8.3.0"
       }
     },
     "node_modules/ajv": {
@@ -105,9 +105,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
-      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
+      "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 70ce3d5..a32a7e8 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "docs/specification.md"
   ],
   "devDependencies": {
-    "@types/node": "^24.13.3",
+    "@types/node": "^26.1.1",
     "ajv": "8.20.0",
     "ajv-formats": "3.0.1",
     "yaml": "2.9.0"