diff --git a/package-lock.json b/package-lock.json
index 52772020..3818c141 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3727,9 +3727,9 @@
       }
     },
     "node_modules/@types/node": {
-      "version": "26.2.0",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.2.0.tgz",
-      "integrity": "sha512-5IviulTZeRNp2vAJ514cc/HUlY5nZ9fCbq9DMyC52BrhFZACo3nI0R7qBxhQmo/d27NFe96ur/b7Wwxklda+kg==",
+      "version": "26.4.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.4.0.tgz",
+      "integrity": "sha512-faiGnoIrLH/V8cibOMEAZ8pMw6oXqSukl29ra4mN8GdaB2ZewzeaLj+INpV5N+Z1eKWzY+IzaIZH2EIR6YZRNQ==",
       "devOptional": true,
       "license": "MIT",
       "dependencies": {
@@ -8089,8 +8089,8 @@
       "devDependencies": {
         "@agentclientprotocol/sdk": "1.4.0",
         "@earendil-works/pi-coding-agent": "0.84.2",
-        "@qoder-ai/qoder-agent-sdk": "^1.0.28",
-        "@types/node": "26.2.0",
+        "@qoder-ai/qoder-agent-sdk": "1.0.28",
+        "@types/node": "^26.4.0",
         "@types/semver": "7.8.0",
         "es-module-lexer": "2.3.2",
         "langium-cli": "4.3.0",
@@ -8148,9 +8148,9 @@
       },
       "devDependencies": {
         "@playwright/test": "^1.62.1",
-        "@types/node": "26.2.0",
+        "@types/node": "^26.4.0",
         "@types/react": "19.2.18",
-        "@types/react-dom": "^19.2.5",
+        "@types/react-dom": "19.2.5",
         "typescript": "7.0.2",
         "vitest": "4.1.11"
       },
@@ -8177,7 +8177,7 @@
         "harness-ui": "dist/cli.js"
       },
       "devDependencies": {
-        "@types/node": "26.2.0",
+        "@types/node": "^26.4.0",
         "es-module-lexer": "2.3.2",
         "typescript": "7.0.2",
         "vitest": "4.1.11"
diff --git a/packages/harness-studio/package.json b/packages/harness-studio/package.json
index a64800b9..8a29f583 100644
--- a/packages/harness-studio/package.json
+++ b/packages/harness-studio/package.json
@@ -75,7 +75,7 @@
   },
   "devDependencies": {
     "@playwright/test": "^1.62.1",
-    "@types/node": "26.2.0",
+    "@types/node": "26.4.0",
     "@types/react": "19.2.18",
     "@types/react-dom": "19.2.5",
     "typescript": "7.0.2",
diff --git a/packages/harness-ui/package.json b/packages/harness-ui/package.json
index 20c14f73..be091b48 100644
--- a/packages/harness-ui/package.json
+++ b/packages/harness-ui/package.json
@@ -46,7 +46,7 @@
     "@qoder-ai/harness": "0.2.0"
   },
   "devDependencies": {
-    "@types/node": "26.2.0",
+    "@types/node": "26.4.0",
     "es-module-lexer": "2.3.2",
     "typescript": "7.0.2",
     "vitest": "4.1.11"
diff --git a/packages/harness/package.json b/packages/harness/package.json
index 3a3cd28e..d8fd1894 100644
--- a/packages/harness/package.json
+++ b/packages/harness/package.json
@@ -113,7 +113,7 @@
     "@agentclientprotocol/sdk": "1.4.0",
     "@earendil-works/pi-coding-agent": "0.84.2",
     "@qoder-ai/qoder-agent-sdk": "1.0.28",
-    "@types/node": "26.2.0",
+    "@types/node": "26.4.0",
     "@types/semver": "7.8.0",
     "es-module-lexer": "2.3.2",
     "langium-cli": "4.3.0",