diff --git a/core/package.json b/core/package.json
index e47f960..78d2af9 100644
--- a/core/package.json
+++ b/core/package.json
@@ -33,7 +33,7 @@
     "typecheck": "tsc --noEmit -p tsconfig.json"
   },
   "devDependencies": {
-    "@types/node": "^22.20.1",
+    "@types/node": "^26.1.1",
     "tsup": "^8.5.1",
     "vitest": "^4.1.10"
   },
diff --git a/extension/package.json b/extension/package.json
index dd8ccf1..e6e2ffd 100644
--- a/extension/package.json
+++ b/extension/package.json
@@ -34,7 +34,7 @@
     "typecheck": "tsc --noEmit -p tsconfig.json"
   },
   "devDependencies": {
-    "@types/node": "^22.20.1",
+    "@types/node": "^26.1.1",
     "@types/vscode": "^1.85.0",
     "esbuild": "^0.28.1",
     "tsx": "^4.20.6",
diff --git a/package-lock.json b/package-lock.json
index 40aea43..18f8f9c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -34,7 +34,7 @@
         "blocknet": "dist/cli.js"
       },
       "devDependencies": {
-        "@types/node": "^22.20.1",
+        "@types/node": "^26.1.1",
         "tsup": "^8.5.1",
         "vitest": "^4.1.10"
       },
@@ -50,7 +50,7 @@
         "@blocknet/core": "*"
       },
       "devDependencies": {
-        "@types/node": "^22.20.1",
+        "@types/node": "^26.1.1",
         "@types/vscode": "^1.85.0",
         "esbuild": "^0.28.1",
         "tsx": "^4.20.6",
@@ -2016,13 +2016,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "22.20.1",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-22.20.1.tgz",
-      "integrity": "sha512-EANqOCF9QFyra+4pfxUcX9STKJpCLjMbObVzljIJomAWSnuSIEAvyzEU53GaajbXJEgdh0iEcPL+DGvpUd4k1Q==",
+      "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": "~6.21.0"
+        "undici-types": "~8.3.0"
       }
     },
     "node_modules/@types/vscode": {
@@ -5076,9 +5076,9 @@
       "license": "MIT"
     },
     "node_modules/undici-types": {
-      "version": "6.21.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
-      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
+      "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"
     },