diff --git a/package-lock.json b/package-lock.json
index 97be877..8db4eb4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,7 @@
         "tiny-secp256k1": "^2.2.3"
       },
       "devDependencies": {
-        "@types/node": "^20.11.16",
+        "@types/node": "^26.6.6",
         "@typescript-eslint/eslint-plugin": "^6.21.0",
         "@typescript-eslint/parser": "^6.21.0",
         "bumpp": "^9.2.1",
@@ -1795,13 +1795,13 @@
       "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": "26.6.6",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.6.6.tgz",
+      "integrity": "sha512-MzQj+8Kx3XI40OmUAE6Qoh58ZMNstNNMwn2nfd3qWsfe7nDNSqJNzes4njhz6AHwrSHOffSLwXU6yb474Q4aog==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~6.21.0"
+        "undici-types": "~8.9.0"
       }
     },
     "node_modules/@types/resolve": {
@@ -7894,9 +7894,9 @@
       }
     },
     "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": "8.9.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.9.0.tgz",
+      "integrity": "sha512-KTDyRTYX8sWmKXAikPHHSyc63CRPETMctyjKFupcC6OBLXT3xsN0e9aF7m+mIXutFWpUXuedtowG7iLOzp0kQg==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/package.json b/package.json
index 8222ec6..ee9fd72 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "typecheck": "tsc --noEmit"
   },
   "devDependencies": {
-    "@types/node": "^20.11.16",
+    "@types/node": "^26.6.6",
     "@typescript-eslint/eslint-plugin": "^6.21.0",
     "@typescript-eslint/parser": "^6.21.0",
     "bumpp": "^9.2.1",