diff --git a/client/package-lock.json b/client/package-lock.json
index f464515..10f3339 100644
--- a/client/package-lock.json
+++ b/client/package-lock.json
@@ -17,7 +17,7 @@
         "foc-observer": "dist/cli.js"
       },
       "devDependencies": {
-        "@types/node": "^25.6.0",
+        "@types/node": "^26.0.1",
         "typescript": "^6.0.3",
         "vitest": "^4.1.0"
       }
@@ -470,13 +470,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "25.9.1",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.9.1.tgz",
-      "integrity": "sha512-xfrlY7UD5rMJk3ZVJP8BNzS28J36YJg+xp+LPXV1TdWxr8uMH5A860QNxYDGQe/ylDSgjxE52Q9VnO7p75tJxg==",
+      "version": "26.0.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.0.1.tgz",
+      "integrity": "sha512-fc3KiUoBt6kie0N9bIW3E47vZsuaMf0PM2AaUpLCLT0s/LvX1nxAim6Fc049cNxODPpGm6qRAuUOB86SkRuPQw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": ">=7.24.0 <7.24.7"
+        "undici-types": "~8.3.0"
       }
     },
     "node_modules/@vitest/expect": {
@@ -2201,9 +2201,9 @@
       }
     },
     "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/client/package.json b/client/package.json
index 9a482af..38ca19b 100644
--- a/client/package.json
+++ b/client/package.json
@@ -37,7 +37,7 @@
     "zod": "^4.3.6"
   },
   "devDependencies": {
-    "@types/node": "^25.6.0",
+    "@types/node": "^26.0.1",
     "typescript": "^6.0.3",
     "vitest": "^4.1.0"
   }