diff --git a/package-lock.json b/package-lock.json
index b70dc1413..914b80bd5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17416,6 +17416,7 @@
       "version": "0.36.0-nightly.20260317.2f90b4653",
       "dependencies": {
         "@a2a-js/sdk": "0.3.11",
+        "@agentclientprotocol/sdk": "^0.16.1",
         "@google-cloud/storage": "^7.16.0",
         "@google/gemini-cli-core": "file:../core",
         "express": "^5.1.0",
@@ -17747,7 +17748,7 @@
         "html-to-text": "^9.0.5",
         "https-proxy-agent": "^7.0.6",
         "ignore": "^7.0.0",
-        "ipaddr.js": "^1.9.1",
+        "ipaddr.js": "^2.3.0",
         "js-yaml": "^4.1.1",
         "json-stable-stringify": "^1.3.0",
         "marked": "^15.0.12",
@@ -17918,6 +17919,15 @@
         "node": ">= 4"
       }
     },
+    "packages/core/node_modules/ipaddr.js": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-2.3.0.tgz",
+      "integrity": "sha512-Zv/pA+ciVFbCSBBjGfaKUya/CcGmUHzTydLMaTwrUUEM2DIEO3iZvueGxmacvmN50fGpGVKeTXpb2LcYQxeVdg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 10"
+      }
+    },
     "packages/core/node_modules/json-schema-traverse": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
diff --git a/packages/core/package.json b/packages/core/package.json
index de105d438..ab5236734 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -67,7 +67,7 @@
     "html-to-text": "^9.0.5",
     "https-proxy-agent": "^7.0.6",
     "ignore": "^7.0.0",
-    "ipaddr.js": "^1.9.1",
+    "ipaddr.js": "^2.3.0",
     "js-yaml": "^4.1.1",
     "json-stable-stringify": "^1.3.0",
     "marked": "^15.0.12",