diff --git a/package-lock.json b/package-lock.json
index 51aa1f3..79d4127 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,7 +15,7 @@
         "dunningkit": "src/cli.ts"
       },
       "devDependencies": {
-        "@types/node": "^20.14.0",
+        "@types/node": "^26.2.0",
         "playwright": "^1.59.1",
         "tsx": "^4.16.0",
         "typescript": "^5.5.0",
@@ -913,12 +913,12 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "20.19.43",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.43.tgz",
-      "integrity": "sha512-6oYBAi5ikg4Pl+kGsoYtawUMBT2zZMCvPNF7pVLnHZfd1zf38DRiWn/gT01RYCdUqkv7Fhr+C9ot4/tb+2sVvA==",
+      "version": "26.2.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.2.0.tgz",
+      "integrity": "sha512-5IviulTZeRNp2vAJ514cc/HUlY5nZ9fCbq9DMyC52BrhFZACo3nI0R7qBxhQmo/d27NFe96ur/b7Wwxklda+kg==",
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~6.21.0"
+        "undici-types": "~8.3.0"
       }
     },
     "node_modules/@types/retry": {
@@ -1803,9 +1803,9 @@
       }
     },
     "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==",
       "license": "MIT"
     },
     "node_modules/vite": {
diff --git a/package.json b/package.json
index 5ea8d2f..648c3df 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "@google/genai": "^1.9.0"
   },
   "devDependencies": {
-    "@types/node": "^20.14.0",
+    "@types/node": "^26.2.0",
     "playwright": "^1.59.1",
     "tsx": "^4.16.0",
     "typescript": "^5.5.0",