diff --git a/CHANGELOG.md b/CHANGELOG.md
index a221574..b12ebc6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 6.1.1
+
+### Changed
+
+- Updated `@tangle-network/agent-eval` to `0.131.0` while retaining the exact `@tangle-network/agent-interface` `0.35.0` contract.
+- Extended packed-package verification to confirm both installed agent stack dependencies match the package manifest.
+
 ## 6.1.0
 
 ### Changed
diff --git a/README.md b/README.md
index 726ebfc..0325f42 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ Supply application callbacks for those decisions, or use `@tangle-network/agent-
 ## Install
 
 ```bash
-pnpm add @tangle-network/agent-knowledge @tangle-network/agent-eval@0.130.1
+pnpm add @tangle-network/agent-knowledge @tangle-network/agent-eval@0.131.0
 ```
 
 Requires Node.js 20.19 or later.
diff --git a/package.json b/package.json
index c23960a..2834878 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tangle-network/agent-knowledge",
-  "version": "6.1.0",
+  "version": "6.1.1",
   "description": "Build, search, evaluate, and improve source-backed knowledge bases.",
   "homepage": "https://github.com/tangle-network/agent-knowledge#readme",
   "repository": {
@@ -75,7 +75,7 @@
     "verify:official-optimizers": "node scripts/verify-official-optimizers.mjs"
   },
   "dependencies": {
-    "@tangle-network/agent-eval": "0.130.1",
+    "@tangle-network/agent-eval": "0.131.0",
     "@tangle-network/agent-interface": "0.35.0",
     "proper-lockfile": "4.1.2",
     "zod": "^4.4.3"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index fd00d36..ba21f10 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -16,8 +16,8 @@ importers:
   .:
     dependencies:
       '@tangle-network/agent-eval':
-        specifier: 0.130.1
-        version: 0.130.1
+        specifier: 0.131.0
+        version: 0.131.0
       '@tangle-network/agent-interface':
         specifier: 0.35.0
         version: 0.35.0
@@ -636,8 +636,8 @@ packages:
   '@tangle-network/agent-core@0.4.24':
     resolution: {integrity: sha512-9rVpm1AaCCB2+5nhhbnh8MULlNaN0yvpq02wLevRrhiklkkjZ/opk+T0dpLtnbScFk634NEkbNd6qdIKXfqPjQ==}
 
-  '@tangle-network/agent-eval@0.130.1':
-    resolution: {integrity: sha512-2w+64ehGdr15/ZUJ5tYe42krAeCyuFSrhHUbNdf7d4jGcCmeXUCcq/YZVFRGuNCKSFV5BZxrjDhRyixyOdLk8Q==}
+  '@tangle-network/agent-eval@0.131.0':
+    resolution: {integrity: sha512-2Qh3DPqlmHlvb1VGbtWP83Uxqm52l5bkZ8V2dKZjIXmkNrmZ5lgEHn2yg1WEagdikHyV8zs/8lzo8tnU/CuwwQ==}
     engines: {node: '>=20'}
     hasBin: true
 
@@ -2750,7 +2750,7 @@ snapshots:
       '@tangle-network/agent-interface': 0.35.0
       zod: 4.4.3
 
-  '@tangle-network/agent-eval@0.130.1':
+  '@tangle-network/agent-eval@0.131.0':
     dependencies:
       '@asteasolutions/zod-to-openapi': 9.1.0(zod@4.4.3)
       '@ax-llm/ax': 23.0.5(zod@4.4.3)
diff --git a/scripts/verify-package.mjs b/scripts/verify-package.mjs
index 9c9996f..b005666 100644
--- a/scripts/verify-package.mjs
+++ b/scripts/verify-package.mjs
@@ -52,6 +52,10 @@ const agentEvalVersion = sourcePackage.dependencies?.['@tangle-network/agent-eva
 if (!/^\d+\.\d+\.\d+$/.test(agentEvalVersion)) {
   throw new Error('@tangle-network/agent-eval must be pinned to one exact version')
 }
+const agentInterfaceVersion = sourcePackage.dependencies?.['@tangle-network/agent-interface']
+if (!/^\d+\.\d+\.\d+$/.test(agentInterfaceVersion)) {
+  throw new Error('@tangle-network/agent-interface must be pinned to one exact version')
+}
 const tempRoot = mkdtempSync(join(tmpdir(), 'agent-knowledge-package-'))
 
 try {
@@ -91,6 +95,7 @@ try {
       '--prefer-online',
       sourceTarball,
       `@tangle-network/agent-eval@${agentEvalVersion}`,
+      `@tangle-network/agent-interface@${agentInterfaceVersion}`,
     ],
     appDir,
   )
@@ -117,6 +122,12 @@ try {
       'utf8',
     ),
   )
+  const installedAgentInterface = JSON.parse(
+    readFileSync(
+      join(appDir, 'node_modules', '@tangle-network', 'agent-interface', 'package.json'),
+      'utf8',
+    ),
+  )
   if (
     installedPackage.dependencies?.['@tangle-network/agent-eval'] !== agentEvalVersion ||
     installedAgentEval.version !== agentEvalVersion
@@ -125,6 +136,15 @@ try {
       `agent-eval version mismatch: dependency=${installedPackage.dependencies?.['@tangle-network/agent-eval']} installed=${installedAgentEval.version} expected=${agentEvalVersion}`,
     )
   }
+  if (
+    installedPackage.dependencies?.['@tangle-network/agent-interface'] !==
+      agentInterfaceVersion ||
+    installedAgentInterface.version !== agentInterfaceVersion
+  ) {
+    throw new Error(
+      `agent-interface version mismatch: dependency=${installedPackage.dependencies?.['@tangle-network/agent-interface']} installed=${installedAgentInterface.version} expected=${agentInterfaceVersion}`,
+    )
+  }
   const installedSkill = readFileSync(
     join(installedPackageDir, 'skills', 'build-with-agent-knowledge', 'SKILL.md'),
     'utf8',
@@ -184,7 +204,7 @@ try {
   onlyTarball(repackDir)
 
   process.stdout.write(
-    `Verified ${packageName}@${installedPackage.version}: clean install, ${publicImports.length} imports, skill, CLI version, and re-pack.\n`,
+    `Verified ${packageName}@${installedPackage.version} with agent-eval ${installedAgentEval.version} and agent-interface ${installedAgentInterface.version}: clean install, ${publicImports.length} imports, skill, CLI version, and re-pack.\n`,
   )
 } finally {
   rmSync(tempRoot, { recursive: true, force: true })