diff --git a/package.json b/package.json
index e13dc13..c487962 100644
--- a/package.json
+++ b/package.json
@@ -22,5 +22,5 @@
     "demo:score": "npm run build:core && tsc --target ES2022 --module NodeNext --moduleResolution NodeNext --strict --esModuleInterop --skipLibCheck examples/authority-score.ts --outDir .tmp-score && node .tmp-score/authority-score.js",
     "build:box": "tsc -p packages/box/tsconfig.json"
   },
-  "devDependencies": {"typescript": "^5.9.2", "@types/node": "^24.3.0"}
+  "devDependencies": {"typescript": "^5.9.2", "@types/node": "^26.4.1"}
 }
diff --git a/packages/cli/package.json b/packages/cli/package.json
index 5f142d9..bb5eb54 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -11,7 +11,7 @@
     "agent-authority-core": "0.1.6"
   },
   "devDependencies": {
-    "@types/node": "^24.3.0",
+    "@types/node": "^26.4.1",
     "typescript": "^5.9.2"
   }
 }
diff --git a/packages/core/package.json b/packages/core/package.json
index 35271b1..f513fb5 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -8,7 +8,7 @@
     "build": "tsc -p tsconfig.json"
   },
   "devDependencies": {
-    "@types/node": "^24.3.0",
+    "@types/node": "^26.4.1",
     "typescript": "^5.9.2"
   }
 }
diff --git a/packages/enterprise/package.json b/packages/enterprise/package.json
index 6ecf718..2763821 100644
--- a/packages/enterprise/package.json
+++ b/packages/enterprise/package.json
@@ -23,7 +23,7 @@
     "pg": "^8.16.3"
   },
   "devDependencies": {
-    "@types/node": "^24.3.0",
+    "@types/node": "^26.4.1",
     "@types/pg": "^8.15.5",
     "typescript": "^5.9.2"
   }